Bristol Bears centre Will Hurrell has retired with immediate effect after medical advice.
The 30-year-old centre suffered a probable stroke following the Gallagher Premiership clash against Leicester Tigers in January.
He was withdrawn with a head injury during the second half before becoming unwell and being treated at Leicester Royal Infirmary.
Hurrell made 68 appearances during his four seasons with the club.
"After speaking with specialists, I've been advised that I can't engage in any contact sports because of my head injury," Hurrell told the club's official site.
"It's been a really challenging year for me personally, but I accept this is the right decision for me and my family.
"I've been lucky to have played the sport I love and to have met brilliant people along the way. I'm proud of the career I've had and to have represented some fantastic clubs.
"Bristol has become my second home and I have genuinely loved every minute. I can't thank the supporters enough for how welcome they have made me, and I'll still be supporting the team at Ashton Gate.
"When I told Pat (Lam, director of rugby) about the news, he called a video conference team meeting and I spoke to the boys and they shared some really special messages. It was very emotional, but just hits home what an amazing culture we have at the Bears.
"Wherever this club ends up, there's a sense of pride that I've played my part in that journey and made some friends for life along the way.
"Rugby has taught me many important values that I will carry into the next chapter of my life."