NEW YORK (AP) — The men's semifinals are on tap today at the U.S. Open. Top seed Rafael Nadal faces No. 3 Juan Martin del Potro, and No. 6 Novak Djokovic (NOH'-vak JOH'-kuh-vich) takes on No. 21 Kei Nishikori (kay nih-shih-KOHR'-ee). It is the first time since the 2012 Australian Open that the last four men at a Grand Slam tournament are all past finalists. Nadal won the U.S. Open in 2010, 2013 and a year ago; Djokovic in 2011 and 2015; del Potro in 2009.

BOSTON (AP) — Two of the top teams in the majors meet at Fenway Park tonight when Gerrit Cole and the Astros take on David Price and the Red Sox in the opener of a three-game set. Houston beat Boston in the playoffs last year on the way to winning the World Series. The streaking Astros have won five straight behind slugger Alex Bregman, who has reached base safely in 33 consecutive games. He's had four home runs in his last five games.

DENVER (AP) — Trevor Story and the first-place Rockies open a pivotal three-game series against the Dodgers at Coors Field with 1 1/2 games separating the NL West rivals. Colorado had a day off following Story's three-homer outburst in a 5-3 win over San Francisco on Wednesday, which gave the All-Star shortstop a career-best 31 homers this season. He'll try to resume his powerful pace against resurgent ace Clayton Kershaw, who has a 2.14 ERA since the start of August.

SEATTLE (AP) — Oakland fans will be keeping an eye on Seattle, where the Yankees play the Mariners. The A's are 3 1/2 games back of New York for the top AL wild card, but the Mariners are 5 1/2 behind Oakland. Masahiro Tanaka will face Mariners lefty James Paxton. Tanaka is 6-0 with a 2.34 ERA in eight starts against the Mariners. Paxton returned from the disabled list last Saturday and struck out 10 in five innings to beat Oakland.

SEATTLE (AP) — The WNBA Finals begin tonight in Seattle. It's the first trip to the finals for the Washington Mystics and the third for the Seattle Storm. The best-of-five series pits Mystics star Elena Delle Donna against league MVP Breanna Stewart.