Former Blues academy graduate Fikayo Tomori was sent off inside the first 20 minutes of the game for a professional foul on former teammate Mason Mount.
The Blues were awarded a penalty, and Jorginho coolly slotted past Ciprian Tatarusanu to give Chelsea an early lead.
The red card tilted the game in favour of Potter’s side. They used their numerical advantage well and doubled the lead in the 34th minute after Pierre-Emerick Aubameyang latched onto Mount’s through ball.
Speaking to ChelseaTV after the game, Potter said: “To come here and win is not straightforward, as you can see from the start of the game.
“The crowd and the atmosphere were fantastic, but overall we played well. The red card changes the complexion of the game, but we still have to make their 10-men count, which I think we did quite well.
“I still felt that we could do enough with the 11 v 11, but the referee has made the decision and we have to get on with it.
“So overall we’re delighted with the three points, with the clean sheet, and to score two goals is good.”
Aubameyang’s goal was his third in four appearances in all competitions since joining the club. It was also his third in his last three games.
Speaking on the striker’s form, Potter added: “We’ve not been doing anything special.
“He’s just been building his fitness, he came from a difficult summer, and the more game time he gets, the stronger he gets. It looks like he’s enjoying his football and scoring goals is important for him.”
Potter will look to build on Chelsea’s improved form when his side travels to face Aston Villa this weekend.
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