Carlos Alcaraz, of Spain, celebrates after defeating Novak Djokovic, of Serbia, during the men’s singles semifinals of the U.S. Open tennis championships, on Friday. Their career totals: Alcaraz owns five Slam titles, Sinner four. (Yuki Iwamura | AP)Alcaraz defeated Sinner at the French Open in June; Sinner defeated Alcaraz at Wimbledon in July. Sinner also has made it to five straight Grand Slam finals, a stretch that started at the U.S. Open 12 months ago. A clash of the comebacks: Anisimova outlasts Osaka in the U.S. Open semifinals Amanda Anisimova beat Naomi Osaka in the U.S. Open semifinals early Friday in a tense, three-set match.