roki sasaki

Long-term experiments demand resources, which is why the Dodgers’ lab is perfect for the Roki Sasaki project.

Funding is no issue. Time is no object. Pressure is a privilege and so is patience.

And when the Dodgers set out to prove a hypothesis — Roki Sasaki can be a “Cy Young-caliber” starting pitcher, as general manager Brandon Gomes has suggested — they did it with the luxury of seeing the project all the way through, until they’ve been proved right.

And most everyone else, wrong.

No, Sasaki didn’t need to be moved to the bullpen.

No, Sasaki didn’t need to be sent back down to the minor leagues.

No, Sasaki wasn’t going to be a bust.

Yes, the Dodgers knew exactly what they were doing by continuing to trot out the 24-year-old right-hander, providing him with the big league education they promised.

Thursday’s test ran 5⅓ innings, and Sasaki — with his bigger glove and harder splitter — held the Seattle Mariners at bay until the sixth inning, when they scored their only two runs in a game the Dodgers won 6-2.

For the fourth straight start, Sasaki performed like the pitcher who was promised when he picked the Dodgers 18 months ago, trusting them to develop him into a starting star.

Tack on another win to three consecutive he’d previously recorded, against the Colorado Rockies, New York Yankees and New York Mets.

In his past four starts, Sasaki (5-5) has struck out 26 batters, walked seven and has a 2.25 ERA and 3.44 FIP in 24 innings.

Man alive, the Dodgers have done it! “The Monster of the Reiwa Era” is breaking out. And the rest of baseball should probably be terrified.

Teammates congratulate Roki Sasaki as he’s pulled from the game by Dodgers manager Dave Roberts in the sixth inning Thursday against the Seattle Mariners.

(Gina Ferazzi / Los Angeles Times)

“This is a tough league,” catcher Dalton Rushing said. “You have to have confidence and if you don’t have confidence, it’s hard to be successful. I think that’s all it was. He lacked a little bit of confidence early on. And as soon as he had that runway to kind of allow himself to be himself, you’ve seen the best out of him.”

Progress isn’t linear. But it’s been undeniable.

As a much-hyped rookie last season, Sasaki didn’t step right in as a permanent part of the Dodgers’ starting rotation. He had health issues and crises of confidence. And he had to acclimate to a culture far from his home in Japan, and to do it with his baseball-mad country following along closely.

All while playing under the Dodgers’ high-powered microscope. (Ask Kyle Tucker, a 29-year-old, English-speaking American, how challenging it’s been.)

Then, in the postseason, Sasaki became a not-so-secret secret weapon out of the bullpen in the Dodgers’ successful World Series defense. A step forward in relief, and then, as a sophomore starter, several steps back.

This spring training, Sasaki posted a 15.58 ERA and allowed 15 walks in 8⅔ innings. He looked lost — like, I thought, someone whose too-often dejected body language told us the glare of Dodger Stadium’s bright lights would do more damage than help.

I felt bad for the young man, felt he should get to fix his issues in the minors. I doubted his fortitude.

To start the regular season, Sasaki was shaky. He struggled with command. Failed to get out of the fifth inning in his first three starts. And the appeals began for the Dodgers to sign Sasaki up for duty in the ‘pen.

But the Dodgers (69-40) didn’t seem to consider it.

Why would they? They’re incentivized to see this trial all the way through, because of what it says about them as a developmental destination. As the club that pushes the right buttons. That can figure out how to help top talent figure it out.

A lower-half mechanical change over the All-Star break helped the 6-foot-2 Sasaki’s retooled splitter regain its movement and his fastball its heat; he hit or eclipsed 100 mph six times Thursday.

Also, a noticeably larger glove seems to have helped him curb his habit as an overly generous tipper. They thought he might have been inadvertently cluing in opponents with his movements on the mound — now they’ve found a way to better hide them, though neither Sasaki nor manager Dave Roberts want to credit the leather for this recent breakthrough.

“It’s not the glove,” Roberts said. “I think it’s just more of even the second half, when he came out that first start, you just saw that I think he just kind of decided that it’s time to go and finish strong. It’s a new half, it’s a new beginning. And you’ve seen a different player, you know, to be quite honest.

“There’s a lot more confidence … I use that word ‘conviction’ a lot, and there’s a lot of conviction.”

Because it’s not the size of a glove on a man, right? It’s his heart.

NEW YORK — Kyle Tucker’s first home run in nearly a month lifted the Dodgers to a 4-2 victory over the New York Mets on Friday night.

Starting pitcher Roki Sasaki held the Mets to just three hits, which included a solo homer from Luis Roberts Jr. that accounted for the only run Sasaki surrendered. He threw seven innings for the third time this season.

The extra velocity that Sasaki mustered in his last start against the New York Yankees — when he surpassed 101 mph in a regular season game for the first time in his MLB career — didn’t make an encore against the Mets (43-61).

Instead, Sasaki leaned on his splitter, throwing it 47% of the time, compared to his season average of 26%.

The Dodgers tied the score 1-1 in the fourth inning. Freddie Freeman, who finished with three hits, led with a single. Mookie Betts matched him, then Miguel Rojas stayed back on a changeup and sent it to deep right field for a sacrifice fly.

The Dodgers twice fell victim to Mets right fielder Carson Benge’s arm in the fifth and sixth. First, Shohei Ohtani was thrown out trying to stretch a double into a triple after a relay throw by Francisco Lindor. Benge threw out Freeman at the plate in the sixth on a Rojas popout to right.

Kyle Tucker follows through on a two-run home run for the Dodgers in the eighth inning of a 4-2 win Friday night over the New York Mets.

(Jim McIsaac / Getty Images)

In the seventh, the Dodgers (66-38) started to build another rally. Dalton Rushing laid down a bunt with runners on the corners. But it bounced right to pitcher Brooks Raley, who flipped the ball to the plate to eventually snare Tucker in a rundown between third and home.

On the next at-bat, Ohtani drove in Teoscar Hernández from third on a sacrifice fly to center field.

Tucker’s two-run homer in the eighth provided the Dodgers some insurance they would end up using when Evan Phillips gave up a solo homer to Francisco Alvarez in the bottom of the inning. It was Tucker’s first home run since June 27.

Injury updates

Right-hander Tyler Glasnow (back spasms) has progressed to the live batting practice phase of his rehab progression, manager Dave Roberts said. It’s a promising sign for a pitcher who twice had to shut down throwing early in his rehab when he aggravated the injury.

Closer Edwin Díaz (arthroscopic elbow surgery) came out well from throwing on back-to-back days in a triple A rehab assignment.

“We talked about him flying across the country; doesn’t make a lot of sense,” Roberts said. “So I think he’s supposed to pitch on Sunday, and then if that goes well, he should be back with us when we get back on Tuesday.”

The Dodgers begin a six-game homestand Tuesday, against the Seattle Mariners and Boston Red Sox.

Catcher Will Smith’s timeline to return from a neck injury remains unclear, after the Dodgers temporarily shut him down from baseball activities, beginning around the All-Star break.

“He’s pain free,” Roberts. “He’s getting back into being more active.”

Mookie Betts’ first hit this series against the Rockies couldn’t have come at a more opportune time. With the crack of the ball against his bat, Tommy Edman scored from third, giving the Dodgers the lead.

And as Betts reached first, he pointed to Freddie Freeman, whose single put Edman in scoring position. It had taken a team effort to overcome another middling start from Roki Sasaki, and Betts, who had little to show before his game-winning hit, took the chance to highlight the joint contribution in the Dodgers’ 4-3 rubber-match win over Colorado (38-56).

“It feels great,” Betts said of his nine-pitch battle. “Helping the boys win, that’s really all it is. We play the game to win, and coming through in a big moment is kind of what, when you’re a kid, playing in the backyard, getting that hit is what you always strive to do, and fortunately, I was able to do it.”

Given a three-run lead in the first inning, brought to the Dodgers by a wild pitch and Kyle Tucker’s two-run, line-drive single to left field, Sasaki seemed set up for success.

Still, he gave away the lead as quickly as it came. In the second inning, he left a fastball too far over the plate, and third baseman Kyle Karros drove the ball over the left-center wall. The slider he dealt two batters later to second baseman Edouard Julien also crossed the zone too far over the plate, and Julien rounded the bases with another homer. In the third, a sacrifice fly by Mickey Moniak evened the scored, 3-3.

Sasaki’s troubles this season have been hard to pin down since his last win on May 23, as Sasaki tries to claw back the triple-digit velocity that’s escaped him as of late.

Against the Rockies, his fastball topped out at 99.1 miles per hour before steadily dropping to 98. He had managed five strikeouts in his six innings when manager Dave Roberts replaced him with Jack Dreyer, though the three earned runs couldn’t be ignored.

But Roberts also acknowledged the possibility that the pitcher had been tipping his pitches, possibly since he was playing in Japan, and Sasaki has tried to address it after a three-inning, six-run start last week. Even if he had fully self-corrected, his control issues remain. In the third inning, he walked the tying runner, Brett Sullivan.

“I’ve been working on a lot of things like the tipping stuff,” Sasaki said through interpreter Kensuke Okubo. “Also, I need to make quality pitches.”

Sasaki regained some of his confidence in the fourth when he worked out of a two-base jam with two strikeouts and a flyball to right, something that didn’t go unnoticed by Roberts.

“You can see the demeanor walking off the mound, the confidence,” Roberts said. “For me, it was more of let him end on a high note, feeling good about his outing, and then go from there.”

The Dodgers’ problems were compounded by Alex Call wasting the team’s two challenges in his at-bat in the first inning when the team had already taken the lead. And maybe it would’ve been excusable if Call had driven in the runners on first and second, but instead he ended the inning on a strikeout, stranding both. Roberts called the situation an “outlier” and didn’t feel as though he needed to have a conversation with Call regarding the situation.

After the three-run first, the Dodgers (61-33) remained hitless until Max Muncy laced a double down the right-field line in the sixth, though to little avail. As the innings ticked forward, Colorado’s chances seemed to increase. The Rockies hold the best league batting average (.297) in the eighth and ninth innings (the Dodgers are fourth with .268). And the Dodgers relievers, within the same constraints, have a 3.83 ERA — not bad, but not in the top 10 either.

Third baseman Max Muncy can’t get his glove on a line-drive double by Kyle Karros in the fourth inning.

(Gina Ferazzi/Los Angeles Times)

So when Alex Vesia struggled against the Rockies in the eighth inning and Muncy suffered a throwing error, Colorado seemed in position to score with the bases loaded and one out. Vesia struck out TJ Rumfield and Edgardo Henriquez (4-0), his replacement, retired Karros on a fly ball to right.

After Betts’ single allowed the Dodgers to take the lead, Tanner Scott (13) shut down the Rockies with back-to-back strikeouts, avoiding the team’s eighth series loss of the season.

“Didn’t feel great,” Roberts said. “Fortunately, we won a series, but that’s not the kind of way you want to do it.”

Roki Sasaki’s abysmal appearance faded away in the Dodgers’ 12-7 win over the San Diego Padres after Los Angeles rose from a catatonic first inning. The Dodgers roared back from a 6-0 deficit as Andy Pages skirted a tying double down the left-field line, and Mookie Betts and Max Muncy each drove in runs to give them the lead in a four-run fourth inning. All of which sent the sellout crowd into jubilant celebrations, some jumping, others breaking out World Cup chants.

“I don’t know,” manager Dave Roberts said of the team’s ability to turn the game around. “Thankfully, it played out the way I didn’t expect, or the way it started.”

By the time the game ended, Sasaki’s three-inning start seemed like a murky nightmare the Dodgers awoke from in a sweat. Except the Dodgers weren’t dreaming, and the team hadn’t done much to assuage the concerns with Sasaki.

The problem with Sasaki isn’t his stuff. On his best nights, when the velocity and command combine, Sasaki blows past batters with a triple-digit fastball and cutting off-speed pitches. The problem has been how to tick the radar without making the strike zone look like a Jackson Pollock painting — and recently, it has.

Sasaki’s June swoon, impervious to the calendar change, continued into Thursday’s series opener against the Padres, in which the right-hander gave up three home runs and seven hits before Roberts called it quits going into the fourth inning.

“They were on everything,” Roberts said. “You could see it.”

One possible concern? Tipping pitches. While Roberts and catcher Dalton Rushing said the team would need to do some more research into Sasaki’s start, both left the door open to this answer.

“That would be a big explanation as to how they felt like they were on every pitch,” Rushing said.

As San Diego chugged through its lineup, Sasaki struggled to keep up. With his first pitch, he gave up a double to Fernando Tatis Jr., who scored on Manny Machado’s home run that left center fielder Pages staring at the ball’s path as it plopped down on the other side of the blue outfield fence.

The inning was only a preview of the Padres’ power. Each of the nine San Diego batters got his chance against Sasaki in the second, and the team quickly dug the Dodgers into a six-run hole. He surrendered two home runs in the second inning. First, Jackson Merrill blasted a ball to left-center field, and, two outs later, Jake Cronenworth drove in two runs with a shot to right-center.

Sasaki said through interpreter Kensuke Okubo that he felt like he needed work on his command to improve, but he felt like his fastball was good.

Roki Sasaki has his head down after giving up a solo homer to Jackson Merrill in the second inning.

(Gina Ferazzi / Los Angeles Times)

“I don’t think my stuff was bad today,” Sasaki said. “Overall, it wasn’t great but a lot of things evolved.”

Part of Sasaki’s issue lies with his approach. Roberts said he wants the second-year pitcher to be aggressive, to play the cat-and-mouse game required to beat batters in the box. But when given the opportunity, Sasaki has shrunken in recent outings, struggling with his command and his ability to pitch deep into games.

“We had a great May, so let’s just get back to competing and making pitches,” Roberts said.

When reliever Will Klein walked out to the mound in the fourth to the aggressive, rambunctious clamor of the Dropkick Murphys’ “I’m Shipping Up to Boston” and collected two scoreless, one-hit innings, the relief was immediate: The Dodgers took the lead.

The lineup already was revving, as Dalton Rushing homered in the second inning while Sasaki was still in the game, and both Kyle Tucker and Max Muncy drove in runs in the third, cutting the deficit to two. The Dodgers broke through against the Padres’ bullpen to score six runs in the fourth and fifth innings.

“The bullpen was fantastic tonight, and then the offense came up big,” Roberts said.

A late catch by Pages helped close out the game after he gloved a ball despite ramming into the padding of the center field wall. A combined effort by Paul Gervase and Tanner Scott shut down San Diego’s ninth-inning momentum after it pushed across a run.

“Turned back around, was able to find the ball and make a really good catch right there,” Tucker said. “That was a huge out.”

The Dodgers (57-31) beat their division rivals for the fifth time in seven games to open a 13-game lead over both San Diego and Arizona. The Padres, meanwhile, have given up 65 runs over the last six days, the most in such a span in franchise history.

But San Diego’s flaws don’t negate the Dodgers’ as they burned through six relievers in their win. So, while the Dodgers crawled out of the hole with a season-high 17 hits, the steep cost heightens the pressure on the rest of the rotation the rest of the series.

SAN DIEGO — The home run that Roki Sasaki gave up to San Diego’s Ty France was more dramatic than the two walks he issued to open the inning. But it was the free passes that really hurt him.

In the Dodgers’ 7-1 loss to the Padres on Friday, Sasaki was out of the game before he could record an out in the fifth inning. He gave up only three hits but issued five walks, tying his season high, and hit a batter.

“I actually felt different than I ever felt before, mechanically,” Sasaki said through interpreter Kensuke Okubo, noting that his lower body felt a little off. “So I need to go over it and see what was really happening.”

Sasaki successfully pitched around traffic for much of his outing, other than the three-run homer to France in the second inning. But the inefficiency sent his pitch count past 80 before he exited with runners on first and second in the fifth.

“I’m not going to have it every time out, so that’s something I have to improve,” Sasaki said. “And also the game plan. I was able to execute some of the pitches, but some of the pitches I couldn’t, so that’s something I have to go through before next start.”

Earlier this month, when Sasaki held the Angels scoreless through seven two-hit innings, it seemed as if he’d had a breakthrough. But in three starts since, including a seven-run dud against the Chicago White Sox two weeks ago, he has yet to pitch through the sixth inning.

“I am a little surprised, because there was such good momentum going on,” manager Dave Roberts said. “Hopefully we can get him back to throwing the way he did in May.”

The Padres’ Walker Buehler walks off after holding his old team to one run for 5-1/3 innings Friday at Petco Park.

(Derrick Tuskan / Ap Photo/derrick Tuskan)

Sasaki’s command issues Friday showed up almost immediately. After striking out Padres leadoff hitter Fernando Tatis Jr., Sasaki walked Samad Taylor on 10 pitches. But Sasaki bounced back by inducing a double play.

The next inning, there would be no such escape. Sasaki walked both Manny Machado, whom he also battled for 10 pitches, and Gavin Sheets to open the frame. Then Xander Bogaerts’ sharp line drive to center field found leather.

France’s long fly ball to left field, however, found the seats.

Sasaki’s only clean inning, the third, was made possible by catcher Dalton Rushing’s successful challenge of a called ball four against Tatís, flipping a walk into a strikeout.

“I know that there’s confidence in there,” Roberts said. “But when you feel good and you don’t feel good mechanically and can’t execute pitches, then the results are walks, and 1-2 [count] homers, and things like that. But I do think that we can kind of tackle the mechanical things that he’s probably looking for right now.”

The Padres piled on in the eighth inning against reliever Jonathan Hernandez, as the sold-out crowd chanted “Beat L.A.!”

Mookie Betts hit a home run off former teammate Walker Buehler for his second homer in as many games. Betts seems to have come out of his offensive funk, entering Friday with a 1.061 on-base-plus-slugging percentage over the previous 11 games.

Buehler earned the win, delivering five strikeouts in 5⅓ innings.

“[Buehler] is reinventing himself,” Roberts said. “He’s throwing the kitchen sink at you. Cutter, slider, changeup, two-seamers. He doesn’t just try to bully you, and he’s finding ways to just get guys out. So yeah, he’s gonna still go up there and compete.”

The Dodgers went 0 for 4 with runners in scoring position and squandered a bases-loaded opportunity with one out in the sixth inning after chasing Buehler. Max Muncy popped out and Kyle Tucker, back in the lineup after exiting Monday’s game because of back spasms, flied out.

The Dodgers have built such a big lead in the division that the loss barely made a dent. The Padres, in second place, trail by eight games.