Nottingham Rugby captain Brent Wilson has announced his retirement from the game due to an ongoing knee problem.
The flanker scored 36 tries in 81 appearances for the Championship club since signing from Newcastle in 2011.
Wilson, 33, will not feature in Nottingham's final game this season, having suffered a concussion in March.
"I saw a knee specialist and it's not in a great way, so he's pretty much said you're going to have to call time," he told BBC Radio Nottingham.
"I felt I had a lot more rugby in me, and I was keen to keep going for another season at least."
New Zealand-born Wilson spent five years with Premiership side Newcastle before joining Nottingham, who only reached the play-offs once in his time at the club.
"For a small squad on a small budget we've done pretty well to get where we have," he added.
"It would have been nice to have given ourselves a chance in the play-offs and to have been in the top four again.
"It would have been a great way to finish up my career here, but it wasn't to be."
Nottingham are fifth in the Championship, five points behind Rotherham in the final play-off spot with one game to play, but with a substantially inferior points difference.