Justin Wrobleski’s struggles lead to Dodgers’ eighth loss in nine games

PHOENIX — It’s no secret that the Dodgers haven’t played their best baseball over the last nine days. But during their 4-2 loss to the Arizona Diamondbacks on Sunday, they exacerbated the trend.

Dodgers starter Justin Wrobleski remained in a rut, giving up four runs (three earned) in 3⅓ innings. The two-run homer he surrendered to Diamondbacks switch hitter Ketel Marte in the first inning was the ninth home run he has given up in three starts.

Before his recent struggles, Wrobleski hadn’t surrendered more than three homers in a three-game span this season.

He left a fastball belt-high to Marte, who entered Sunday with a .913 OPS against left-handed pitchers. Marte lined it into the Diamondbacks’ bullpen in the left-field corner.

After Wrobleski’s last start, manager Dave Roberts said the Dodgers (70-48) would look into whether the left-hander might be tipping pitches, but he said before the game Sunday that those suspicions seemed “unfounded.”

“I’m just not good enough right now,” Wrobleski said. “It’s kind of what it comes down to. It’s really frustrating. Execution just hasn’t been as good. I feel like [Sunday] just wasn’t good enough. And, again, I’ve got to be better. … I’m not the type to give up. So I’m ready to bear down. This is kind of where you can go two ways, and I’m excited to keep working, and I’m excited for my next one.”

While Wrobleski clearly wasn’t at his best, giving up six hits and three walks, mistakes on defense didn’t help his cause.

Wrobleski could have gotten out of the first before giving up a home run, but baserunner Geraldo Perdomo successfully broke up a potential double play, crossing in front of shortstop Mookie Betts’ sight line as he tried to throw around him.

“Very weird play, but it’s not obstruction,” Roberts said. “But next time, I think we’ve just got to throw through because it wasn’t impeding, but it sort of was intentional.”

The next inning, Wrobleski fielded a sacrifice bunt from Ryan Waldschmidt, but his throw to first was high and wide, allowing a run to score and putting Waldschmidt into scoring position.

“That’s a play that he’s got to make,” Roberts said.

Later in the inning, though the run would have likely scored anyway, the usually strong relay combination of center fielder Andy Pages and Betts ended with Betts throwing over catcher Ben Rortvedt.

The Dodgers’ offense, in the meantime, went down in order in the first two innings. Betts made the best contact, but his opposite-field fly to the warning track found leather.

The rest of the way, the Dodgers tightened up their defense, and their bullpen shut down the Diamondbacks (63-56). The Dodgers’ lineup strung together hits to score on Pages’ third-inning double and Kyle Tucker‘s sixth-inning triple. But they still lost for the eighth time in nine games.

“This series it was very clear that we weren’t hitting the fastball and we were exposing ourselves to the changeup with the secondary, specifically,” Roberts said before the Dodgers left for L.A., where they’ll open a seven-game homestand against the Kansas City Royals. “Are the Royals going to exploit the fastball that we’re not hitting and the changeup below? I don’t know. But we have to make adjustments. I think for me that’s sort of what I see as a group — we’re just not making adjustments.”

Here are three other takeaways from the Dodgers’ 1-5 road trip:

Hitting into double plays

The Dodgers have grounded into an MLB-leading 99 double plays, including one in the eighth inning Sunday.

Part of that has to do with how often the Dodgers get on base. Entering Sunday, they led the majors in on-base percentage (.339). But hitting into double plays has been a major culprit behind the Dodgers’ recent offensive struggles.

“It’s not age,” Roberts said. “It’s not about putting guys in motion, because you start doing things just to do things. And when a guy swings and misses and gets thrown out by 10 feet, that’s a bad process.

“You have to layer it on who the hitter is, the contact ability; who the pitcher is, the swing-and-miss rate; who the runner is. So there’s a lot of people that can look at the rate that we hit into double plays and have thoughts, but they’re not thought through.”

Roberts pointed instead to the batter’s approach at the plate.

“My thought is our guys need to do a better job at understanding what the pitcher is trying to do,” Roberts said.

Back end of the bullpen

Setup man Tanner Scott and closer Edwin Díaz were not available out of the bullpen after pitching Friday and Saturday.

Scott’s velocity has fluctuated over the past week, but Roberts said the Dodgers haven’t yet found an explanation for the trend.

Díaz recorded blown saves in each game. Still, Roberts noted his intensity Saturday, after Díaz gave up the lead with back-to-back triples.

“I don’t know if it’s just, you want to be perfect, you’re trying to get your feet under you, you’ve been in rehab mode a lot,” Roberts said. “But this is something I think can be a springboard for outings to come.”

For the Dodgers’ bullpen to function effectively, they need Díaz to turn around his injury-disrupted season (10.80 ERA in 12 appearances).

Home sweet home

For the first time, the Dodgers are set to roll out their new one-two punch of two-time Cy Young winners. Tarik Skubal is scheduled to make his home debut at Dodger Stadium on Monday against the Royals, followed by Blake Snell’s return from the injured list Tuesday.

“On one side of it, you feel it as the home team because you feel the confidence of who you’re running out there,” Roberts said. “But on the other side, it seems daunting when you look at the probables and you see these Cy Young guys back to back. It’s a lot to take in as an offense. So it feels really good to have those two guys on our side.”

Along with right-hander Yoshinobu Yamamoto at the top of the rotation, the trio has the potential to be even more impactful in the postseason.

“I think you have to win with starting pitching,” Roberts said of the playoffs. “You really do. I know in ‘24 we did it a different way, but starting pitching is kind of your backbone.”