Alexandra Margaret "Ali" DeLoof is an American swimmer specializing in backstroke.

She is the world record holder in the 4×50 m medley relay.

During the 2016 FINA Short Course Worlds in Windsor, Ontario, Canada, she won gold medals in the 4x50 [1][2] and 4x100 metres medley relays, and won a gold medal as a prelim swimmer in the 4x100 metres freestyle relay.

She also won bronze in the 50 metres backstroke,[3] and placed sixth in the 100 metres backstroke.

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