NFL star Vontae Davis retired at HALF-TIME with his team losing 28-0.
The Buffalo Bills were trailing the Los Angeles Chargers when Davis failed to emerge from the locker room for the second half.
According to reports in the US, Davis got changed and immediately left the stadium.
Bills team-mate Lorenzo Alexander banded Davis "completely disrespectful".
Davis later put out a social media post explaining his decision.
Alexander said: "Never seen anything like it ever.
"High school, college, pros. Never seen it, never heard it.
"It's just completely disrespectful to his team-mates. He didn't say nothing to nobody.
"You know as much as I know, I found out in the second half going into the game.
"Coming out they said he's not coming out, he's retired."
Davis' post said he "meant no disrespect to his team-mates" claiming that Sunday's game made him realise he was no longer able to physically compete in the NFL.
Getty Images - Getty
Davis is a 10-year NFL veteran who has twice been named to the Pro Bowl.
The 30-year-old, who has also played for the Miami Dolphins and Indianapolis Colts, signed a $5million contract with the Bills this summer.
There has been no official word from the Bills if he quit on the team just for this game or the rest of his career.
Buffalo head coach Sean McDermott said: "He pulled himself from the game.
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"He communicated to use that he was done.
"When I get back in here, we’ll continue to communicate what exactly is going on there and we’ll go from there.
"I wish I had a better answer for you right now, but I’m just being upfront with you. We just got in and just met."
The Bills mounted something of a comeback, but went on to lose to the Chargers 31-20.