Career Highlights: After taking the gold medal in rival Liu Xiang's home country in 2008, Robles is looking to repeat as champion in what will likely be the final Olympic showdown between the two superstar hurdlers. Liu burst onto the scene first, matching the world record in the 110-meter hurdles while winning a gold medal in 2004 in Athens and then breaking it in 2006. But the Cuban eventually stole the spotlight, surpassing Liu's record with a time of 12.87 seconds in June 2008. Later that summer at the Beijing Games, an injured Liu pulled out of a preliminary heat and Robles ran away with gold in 12.93 seconds. There was no love lost between the two at last year's world championships, where Robles crossed the finish line first but was later disqualified after Liu complained that Robles interfered with him. That gave American Jason Richardson gold and Liu silver, although Robles said he still considers himself the world champion. "If I were from another country that had more power, that wouldn't have happened," the Cuban said in an email to the Associated Press last summer. Robles, the 60-meter hurdles indoor world champion in 2010, missed the indoor worlds this year due to back and right leg injuries and has hinted he may retire after the London Games. But he also said this spring he's in good shape to defend his Olympic title. "I feel right on target in my preparations ... so that I will be at my peak in July," he said. "The objective is to do things well in London."