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Michael Phelps secured another win at the United States Olympic trials to earn another shot at eight golds in London.
Phelps won the 100-metre butterfly in a world-leading time of 51.14 seconds, with Tyler McGill second in 51.32.
Ryan Lochte was third in 51.65 meaning, although the 100m fly is not an event he usually races and would likely not have featured on his Olympic programme even if he had qualified, he lost 3-1 in his personal series with Phelps at the trials.
Phelps will now likely get the chance to repeat his Beijing programme in London: 100m and 200m butterfly, 200m and 400m medley and 200m freestyle, as well as three relays.
Seventeen-year-old Missy Franklin is set for a similarly gruelling schedule after she won the 200m backstroke in two minutes 6.12 seconds.
Franklin, who was followed home by Elizabeth Beisel in 2:07.58, has qualified in four individual events and could race in seven overall including relays.
Kathleen Ledecky and Kate Ziegler were first and second in the 800m freestyle, with Cullen Jones and Anthony Ervin taking the top two spots in the men's 50m free.