Isle of Man TT star Keith Amor announced today that he will be retiring from motorcycle road racing, after learning that his shoulder would required more surgery. The 39-year-old Scotsman first injured his shoulder at the 2011 Isle of Man TT, where he crashed at both Quarterbridge during practice and at Union Mills during the controversial second Supersport TT, which was started under very wet conditions.

Injuring his shoulder further during the 2011 Ulster GP and unable to full heal, Amor made the following succinct statement on Twitter, “Unfortunately after visiting my surgeon yesterday my worst fears came true, I need more surgery so I have decided to retire from racing.”