Scotland lock Jim Hamilton has retired from international rugby after missing out a place in his country's World Cup squad.

Hamilton won 63 caps for Scotland, his last coming in the 16-12 victory over Italy last month.

But the Saracens forward was omitted from Vern Cotter's squad for the tournament, which starts on September 18.

Announcing his retirement on Twitter, Hamilton wrote: "Never in a million Saturday afternoons did I think I would have represented this beautiful country of Scotland 63 times on the rugby field.

"I have loved every single moment of wearing the thistle and feel extremely humble to have done it for nine years. Thank you to the Scotland supporters for making it so special.

"Scottish rugby has not only given me an opportunity to play rugby at the highest level but has given me a platform to be a better man. I wish everyone involved with Scottish rugby all the best and I know consistent success is around the corner."