British cycling legend Sir Mark Cavendish has announced his retirement from professional cycling, with his final race set for Sunday at the Tour de France Criterium in Singapore. The 39-year-old Isle of Man native, widely regarded as the greatest sprinter in cycling history, confirmed the news via social media on Saturday. “I am lucky enough to have done what I love for almost 20 years and I can now say that I have achieved everything that I can on the bike,” Cavendish wrote on Instagram. The ‘Manx Missile’ had initially planned to retire after the 2023 season but extended his career to pursue…