Former World Superbike champion and MotoGP race winner Ben Spies has announced his retirement from racing.
The American has made just two race starts this season due to serious shoulder injuries stretching back to last October's Malaysian round.
A statement from Ducati can be seen below:
'Ducati Motor Holding and Ben Spies announced today that the American will not be racing in 2014 after the parties reached agreement to resolve Ben's current contract with the Italian racing manufacturer.
'The 29-year-old Texan had signed a two-year agreement with Ducati at the end of last season to race in MotoGP in 2013 and 2014 as part of the factory-supported Ignite Pramac Racing Team.
'Ben has been sidelined for most of this season due to an injury to his right shoulder sustained in October 2012 while riding for another manufacturer team [Yamaha]. While he began 2013 racing with Pramac, it quickly became clear that he was not fully healed from his injury and needed to undergo further rehabilitation on his shoulder.
'Unfortunately, on his return to racing at Indianapolis in August, Ben had another setback when he suffered a season-ending crash during practice.
'The resulting operations on both shoulders have left Spies feeling that his physical ability to ride next year remains in question and a decision was jointly made by Ducati and Ben to release Ben from any requirement to race in 2014.
'The 2009 World Superbike Champion, three-time AMA Superbike Champion and MotoGP race winner announced his retirement from the sport in the following way:
"I had such high hopes for racing for Ducati, and Ducati has been incredibly supportive of me during this challenging year, so I am tremendously disappointed that I have not been able to fulfill my personal goals and team goals with Ducati. I want to thank everyone from racing organisations, factories, teams and all my fans for helping me and supporting me throughout my career. I never dreamed that I would reach the level of success that I have over the past 20 years of racing, but the time has come to stop and I do so with great sadness."
'Spies' manager/mother Mary Spies added: "Wherever Ben has raced over the years - from AMA Superbike to World Superbike to MotoGP - he has always felt the warmth and appreciation of the organisers, circuits, teams and fans. We are so grateful to them for their support.”