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MANCHESTER, England (AP) - Ryan Lochte has improved on his own 100-meter individual medley world record at the short-course swimming world championships.
The American's time was 51.15 seconds Sunday. His previous record of 51.25 came in the semifinals Saturday.
It was Lochte's fourth world record of the week. He also set a world mark in the 200 IM and led off the Americans' world-record swim in the 400 freestyle relay.
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