Scottish boxer Mike Towell died late Friday in a Glasgow hospital of severe head injuries he sustained during a bout the previous day, his club said.
Towell, 25, was stretchered out of the ring and taken to hospital after a fifth-round defeat against Dale Evans in a televised welterweight fight on Thursday.
"Within the last hour Mike Towell passed away - he will always be in our heart," his St Andrews Sporting Club tweeted early Saturday.
He died in hospital as he suffered "severe bleeding and swelling to his brain," 12 hours after being taken off life support, according to a Facebook entry of his girlfriend, Chloe Ross.
Ross said that Towell had been suffering from headaches in recent weeks but that they had believed it was stress-related migraines.
Ross said she was "absolutely heartbroken" and that Towell "fought right to the end and he's done us all so proud."
Evans was yet to comment after Towell's death but said in a St Andrews club statement earlier Friday "I am devastated and all my thoughts are with Mike and his family." He named Towell "a true warrior."