US Open; Frances Tiafoe & Taylor Fritz To Meet In All-American Semifinal

NEW YORK (AP) — Frances Tiafoe has reached the U.S. Open semifinals for the second time in three years when his quarterfinal opponent, Grigor Dimitrov, stopped playing because of an injury in the fourth set. Tiafoe was leading 6-3, 7-6 (5), 6-3, 4-1 Tuesday night when Dimitrov retired from the match. Tiafoe advances to an all-American semifinal against Taylor Fritz, guaranteeing the United States a representative in the men’s final. Fritz eliminated No. 4 Alexander Zverev in four sets earlier Tuesday to get to a Grand Slam semifinal for the first time.