Micah Richards swiftly corrected Sol Campbell on Sky Sports last night in a moment that has since gone viral.
The two former England and Premier League defenders were both in the studio representing their former teams as Manchester City ran out 1-0 winners against Arsenal in the 17:30 kick-off at the Etihad Stadium.
Raheem Sterling scored the winner in the first half, pouncing after Bernd Leno could only parry Phil Foden's effort into his path.
Former Gunners defender Campbell was analysing the goal at half-time when he wrongly stated that Foden was right-footed.
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He was talking about Hector Bellerin getting done by Foden and after he'd said his piece, there was a hilariously brilliant moment where Richards let him know the City starlet is in fact a 'leftie'.
"If he does you outside... you know he's [Foden] right-footed as well. He [Bellerin] should know that already.
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"Once those guys get into your zone, you should know that as a defender. As a defender you should know: left or right, or maybe both."
Richards responded by saying, "Foden's left!" - with a priceless facial expression. It was fairly basic footballing knowledge but Campbell had a right nightmare.
It's not the first time he's made an almighty gaffe on Sky Sports, too.
Asked who would win between Belgium and Brazil in the quarter final as part of a World Cup predictions segment on Sky Sports News, the former Macclesfield Town boss replied: "I think France".
Topics: Football News, Micah Richards, Football, Sky Sports, Arsenal