The pair were former defensive partners at Monaco but both now line up in the Blues’ backline.
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But Blackburn’s Carabao Cup trip was their first game together with Badiashile only just returning.
The Frenchman got off to a flying start this season as he opened the scoring for Chelsea on 30 minutes.
It was an emotional moment for Badiashile, who has just recovered from hamstring injury.
And no one enjoyed his opener more than his centre-back partner Disasi – as was evident by their celebration and handshake.
It also won the praise of Blues fans as one said: “Man I love Disasi and Badiashile combo.”
Another added: “Disasi and Benoit Benoit Badiashile reunited and already pulling strings!!”
One gushed: “What a moment for Badiashile and Disasi.”
Another said: “I need a pic of Disasi and Badiashile doing that handshake.”