Sunderland striker Fabio Borini was taken to hospital as a precaution after collapsing at half-time in the 2-2 draw at Cardiff City with what is thought to be a virus.
Borini, who is on loan at Sunderland from Liverpool for the season, had started the game and twice came close to bringing the Black Cats back on level terms against Cardiff.
But he was surprisingly replaced by Steven Fletcher at the break, and news soon filtered through that he had been taken to the University Hospital of Wales in an ambulance.
After the match, Sunderland boss Gus Poyet revealed the player had complained of illness before the game and had been sick, before being unable to continue when the players came in for half-time.
"He's at hospital now," Poyet told Sky Sports 1. "Fabio was feeling very bad before the game, just before the game he was sick.
"We decided together to play but then at half-time it was impossible for him. Now to make sure everything is all right we've taken him to hospital.
"Let's hope it is nothing and he can go back on the plane now."
However, Poyet later told the club's official website that Borini would remain in Wales before returning home on Sunday, but was now out of hospital.
"Fabio was very sick," he said. "The doctor has since checked with the hospital and everything is fine.
"He will stay overnight and then return to Sunderland tomorrow. Luckily it is nothing serious. We were really, really worried so the doctor decided rightly to take him to hospital. But he has been released now. It was a virus or sickness, so no problems.
"He showed great character wanting to play while feeling ill and he almost scored. It shows how much he cares for the club. We wish him all the best."