Moises Caicedo headed for an early bath during an ill-tempered London derby between Chelsea and Arsenal.
Caicedo was flashed the second red card of his career, and the sixth for Chelsea this season, as he clattered into Mikel Merino in the centre of the pitch. Sky Sports commentator Peter Drury said the challenge "can't be watched without wincing."
While Alan Smith, who was on co-comms, added: "He's been a man on a mission, Caicedo - getting in tackles left, right and centre. That's not a good one. He's come in at some speed, and at some force... He's going to be fortunate to stay on the pitch here."
Moises Caicedo's yellow card was upgraded to a red card after a review
Moises Caicedo's yellow card was upgraded to a red card after a review
Referee Anthony Taylor only dished out a yellow card for the challenge, which left both men in a heap on the ground, before he was advised to head over to the VAR monitor.
And he decided to upgrade his decision, telling the crowd: "After review, Chelsea No.25 makes a challenge with excessive force and therefore my final decision is red card."
Smith continued: "He's been so fired up out there, as if he's wanted to prove a point, maybe win that battle with Declan Rice.
"He's been all over the shop making tackles, but that was the worst and a dangerous one."
Speaking in the studio, Theo Walcott said: "The disappointing thing is why he's making the tackle in that position.
"He's been really hungry and forward to win the ball, but in that moment Chelsea are on top, he doesn't have to commit.
"Its a red card when you slow it down, it looks worse. But I agree with Daniel, the fact you've been given a yellow initially kind of slowed it down, being re-reffed."
Pat Nevin, speaking on BBC Radio 5 Live, said: "I was watching the Copa Libertadores final last night, there was a very similar challenge and I couldn't believe the referee didn't go for the red card.
"We thought he had got away with one there - but he was out of control, the ball was miles away and the challenge was awful. Something like that could break your ankle."