Argentinos Juniors defender Luciano Sanchez suffered a horrific leg break after Real Madrid legend Marcelo inadvertently stomped on him while trying to dribble through.
Marcelo was performing brilliantly for Fluminense in the game before the ugly incident occurred in the 55th minute.
Here's how it happened.
Marcelo goes into beast mode dribbling through a number of Argentinos players
The legend is challenged by Sanchez, but Marcelo accidentally stomped on his as he has nowhere else to put his foot
The injury is horrific
Marcelo's reaction afterwards says it all. The Brazilian was in complete shock
Marcelo was shown a red card for the tackle much to the frustration of his coach Fernando Diniz.
"Marcelo was dribbling and had nowhere else to put his foot. Unfortunately, what happened happened, everybody was scared by the injury. But it was absurd to send Marcelo off. Madness," Diniz said after the game.
"Marcelo and everyone at Fluminense are sad for Luciano Sanchez. The red card was wrong and ruined the game. There's no way to accept it," the Brazil interim head coach added.
Marcelo later visited Argentinos' dressing room to check on Sanchez and both players exchanged phone numbers.
"Today I have had to live through a very difficult moment on the pitch. I have inadvertently injured a colleague. I want to wish you the best possible recovery, Luciano Sanchez. All the strength in the world!" Marcelo posted those words on Twitter after.
The Copa Libertadores match eventually ended 1-1.
