Kell Brook’s career is “all over at the elite level” after his defeat by Terence Crawford, says BBC Radio 5 Live boxing commentator Mike Costello.
Former IBF welterweight champion Brook, 34, sustained serious eye injuries in his two previous defeats by Gennady Golovkin and Errol Spence Jr.
“At the elite level, it’s all over for Brook,” said Costello.
“It was quite uncomfortable watching a former world champion pawing away at his eyes and cheekbones.
“That was the worrying thing for me – he clearly has a problem with those injuries.”
Brook won his first 36 bouts, including an impressive points victory over American Shawn Porter to claim the IBF welterweight title in California in 2014.
But he broke his right eye socket in defeat by middleweight Golovkin in 2016 before suffering the same injury