MANCHESTER UNITED star Daniel James appeared to be briefly knocked out - before being allowed to carry on as Wales faced Croatia.
The winger was seen laying flat out on the ground after a mid-air collision with Domagoj Vida.
Players and the referee immediately rushed to James and motioned for medical staff to attend to him.
James, 21, received treatment on the pitch before he was taken off and then immediately brought back on.
Former Tottenham and Hull City midfielder Ryan Mason was not impressed.
Mason, 28, was forced to retire in February 2018 after he suffered a fractured skull following a clash of heads with Gary Cahill at Stamford Bridge a year earlier.
Speaking on social media, Mason wrote: "Daniel James was just knocked out unconscious! Yet three minutes later he has been allowed back onto the pitch."
According to reports, James was put through all concussion protocols and passed them, with the Welsh medical staff deeming him fit to play.