An injury to Max George in the opening episode of ITV's The Games left fans concerned for The Wanted star on Monday.
The 33-year old was seen clutching his leg and being supported by co-stars after finishing in last place in the men's 400m.
After Wes Nelson was declared the winner, with Harry Potter actor Josh Herdman taking second place and former Strictly Come Dancing professional Kevin Clifton third, the show's commentator said: "At the back, limping over the line carrying an injury, Max George."
Back in the studio, meanwhile, host Holly Willoughby added: "Wow, that was incredibly exciting there, but it did look like Max has picked up some sort of injury, we'll have an update on that on tomorrow's show."
She continued: "I hope he's alright, a fantastic finish, a fantastic race."
Fans took to Twitter to voice their concerns with one stating: "Watching Max George with our banners from last night. Hope you going to be ok. You were powering through the 400 metres doing so well, fingers crossed not an injury."
Another added: "I pray you haven't picked up an injury tonight! You were looking superb in that 400 up until then.
"You pushed through the pain and finished, only the strongest can do this! Proud of you Max!"
A third commented: "I hope you aren't too injured. So proud of you."
MirrorOnline has contacted ITV for further comment.
Later in the evening, however, Max took to Twitter himself in a bid to reassure fans: "Sorry guys… been a tough few days but will hopefully be back tomorrow," he said.
"Your support has been amazing... and the signs at the event made my day. Much love always and congrats to all the other boys and girls. PS I think meeting Tyson Fury killed me."
It's been a difficult few weeks for the singer, who has been grieving for his best friend and former bandmate Tom Parker, whilst training for the show.
Tom passed away last month aged just 33, following a two year battle with stage 4 glioblastoma.
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