The first time Fikayo Tomori's name gained some traction in the media was in February 2016 - when he broke Diego Costa's nose in training.
The young defender, last week called into the England senior squad for the games away to Czech Republic and Bulgaria, did not actually realise what had happened to the striker until the following morning when he saw it across social media.
Looking back now it is something the 21-year-old can have a good laugh about.
"I was in school at that point in time," Tomori recalled on Sunday after helping Chelsea to a fourth win in a row away to Southampton. "It was in training and obviously it was an accident.
"I went up for a header and tried to flick the ball backwards. He tried to score and he’s headed into the back of my head and that’s when he broke his nose.
"I didn’t actually know he had done it until the next day when it was all over the papers and I was getting a lot of messages like I had meant to do it."
Of all the people to hurt, even accidentally, the notoriously fiery Costa may be the least advisable but Tomori said that the Spain forward, who is now at Atletico Madrid, did not seek any revenge.
"He was alright, he was alright," Tomori said. "He didn’t kick me in training after that so it was fine."
Instead there was a bigger reaction in the classroom. "There was a little bit of light-heard stick, a lot of banter. When I got back to school people were asking me about it."
Costa flew to Milan immediately to have a mask fitted so he could play in that weekend's game against Newcastle United. Guus Hiddink, then the Chelsea manager, said at the time that “it was just a small incident, just a duel. But it’s very fragile when you hit your nose on the back of the head of a firm young man."
