But as many Lorenzo fans know, the Yamaha YZR-M1 pilot suffered a serious injury in 2013. It arrived at Assen when the 26-year old suffered a nasty high-side during Thursday practice. He broke his left collarbone, immediately flew back to Barcelona for surgery where surgeons installed a titanium plate and 11 screws. But determination trumped all, and in a superhuman effort, he raced that Saturday, finishing fifth.Things turned negative once again when he suffered another crash during practice for the Sachsenring round. Lorenzo landed hard on his recently repaired shoulder, and was out for the round; it would be the only race he missed in 2013.In all efforts to be 100-percent fit and gain that third title in 2014 MotoGP, Lorenzo underwent further surgery on Monday. Barcelona surgeons removed the 11 screws and plate in his left collarbone to allow the bone to further heal ahead of the upcoming season. Lorenzo also had a small surgical procedure completed on his right thumb from an injury sustained in 2010 MotoGP.Surgeons Dr. Joaquin Rodriguez, Dr. Ana Carreras and Dr. Marc Cots carried out the operation on Lorenzo at the Hospital General de Catalunya, in Sant Cugat just outside Barcelona, with the rider’s personal doctor, Teresa Sola, also in attendance, Yamaha reports.Lorenzo remained in the hospital overnight before returning home, and will be re-examined at the end of December. Yamaha says Lorenzo plans to resume full training early in 2014 to be ready for the first MotoGP test in Sepang after the winter test break, which lasts until Jan. 15.