Munster and Ireland full-back Felix Jones has been forced to retire aged just 28 after a neck injury.
Munster confirmed Jones was advised to retire from the sport after a neck problem suffered in the 23-21 Pro12 clash win over Glasgow Warriors on October 2.
Jones made 90 Munster appearances and won 13 Ireland caps, missing the final selection cut ahead of the World Cup.
"It is still unthinkable to believe I will never play another game of rugby," said Jones.
"I've always had one driving purpose in my life and that was to play rugby.
"I'm grateful I could do that in Munster.
"That feeling of walking out in front of a packed Thomond Park is something I will never forget.
"To accept I will not play with my team-mates again is beyond upsetting.
"The guidance I have received from the medical teams in Munster and Ireland has been unfaltering."
Head coach Anthony Foley paid tribute to Jones for his "immense contribution" at Munster.
"We are all hugely disappointed for Felix," said Foley.
"He was a leading example in the way he applied himself through his commitment, work-rate and attention to detail.
"For a player to come in, embody everything that is Munster and have such a presence within the group, he will be sorely missed on and off the field.
"We are very grateful for Felix's immense contribution over the last six years and wish him all the best for the future."