NEW YORK (AP) — Australian Open champion Caroline Wozniacki has easily reached the U.S. Open's second round by beating 2011 titlist Sam Stosur 6-3, 6-2. The No. 2 Wozniacki is the highest-seeded woman left in the field after No. 1 Simona Halep lost her opening match. Wozniacki was the runner-up at Flushing Meadows in 2009 and 2014.

NEW YORK (AP) — Facing dangerously high temperatures expected to last for more than a day, the U.S. Open has extended a heat rule to men that only exists in the women's tour. The U.S. Tennis Association says its medical team recommended the immediate implementation of the heat policy for the men, who will be allowed a 10-minute break between the third and fourth sets.

PHILADELPHIA (AP) — The Philadelphia Phillies have acquired veteran slugger Jose Bautista from the New York Mets for a player to be named later or cash. Bautista batted .196 with 11 homers and 42 RBIs for the Braves and Mets this season. The Phillies enter tonight's game against Washington 3½ games behind Atlanta in the NL East.

HOUSTON (AP) — The Athletics and Astros continue a pivotal series in Houston with 34-year-old hurlers Edwin Jackson and Charlie Morton on the mound. Oakland is Jackson's 13th team, and he's made a big impression since signing a minor league deal on June 6. Over 11 starts, he's 4-3 with a 2.97 ERA. Morton, who is 13-and-3, enjoyed a resurgence in 2017 that has continued this season, though he's struggled lately, allowing six runs over five innings in a 10-7 win against Seattle last time out.

LINCOLN, Neb. (AP) — Nebraska coach Scott Frost says quarterback Tristan Gebbia has been granted a release, freeing him to transfer to another school. Frost made the announcement today, four days before the Cornhuskers' opener against Akron. True freshman Adrian Martinez was named the starting quarterback over the weekend. Gebbia yesterday dropped his classes and did not attend practice.