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Sofia Kenin used to be the up-and-coming American, the one who was a Grand Slam champion at age 21, the one who beat a teenage Coco Gauff on the way to that trophy, the one who right afterward broke into the Top 10 in the WTA…

MELBOURNE, Australia (AP) — Tommy Paul reached his first Grand Slam semifinal and ended the surprising run of Ben Shelton by winning their all-American matchup at the Australian Open 7-6 (6), 6-3, 5-7, 6-4 on Wednesday. Paul, a 25-year-old…