Kepler hit the first grand slam by the Twins this season, one of their four homers in a 15-5 win Sunday at the AL-leading Texas Rangers. While still in last place in the AL, Minnesota has won seven of its last nine games.
"We always talk about trusting the process, but when you get good results and win games, you understand how enjoyable it is to go out there and compete and come out and win games," manager Paul Molitor said. "I'd like to think that these guys are hungry to win as many games going forward. That's kind of an understatement. It should be the mindset all the time."
Minnesota (32-56) won three of four at Texas after taking the last two games of its home series against the Rangers the previous weekend.
Kepler's slam with two outs in the fifth off A.J. Griffin (3-1) put the Twins up 6-0. It was the first career grand slam for Kepler, and seventh homer in his last 20 games.
"We're just having fun. Everybody's laughing before the game, enjoying themselves as much as they can. Picking each other up," Kepler said. "When you have fun like that, you forget about the bad at-bats and all the negative swings you take or whatever it is."
Minnesota has hit 29 homers the last 15 games, and the Twins' 140 runs since June 18 are the most in the majors.
Tommy Milone (2-2) struck out three and walked three. The left-hander was out of the game after walking Adrian Beltre to start the sixth, and Ryan Rua promptly grounded into a double play against reliever Taylor Rogers.
Texas (54-36) still has the AL's best record but has lost nine of 12. Its AL West lead has dwindled from 10 games to 5 1/2 over Houston, still the largest ever for the Rangers at the break, but their smallest since June 14.
"There are points in the season where they don't look so well, don't feel so well. Today capped all that off. Hopefully, that's the bottom," Texas manager Jeff Banister said. "There's some times when you're not playing well, you kind of hope for a rainout. We get a four-day rainout."
Minnesota matched its season high with 18 hits after also having 18 in the series opener Thursday night. Robbie Grossman, Eddie Rosario and Kurt Suzuki, the Nos. 6-8 batters, each had three hits, and No. 9 batter Escobar had two hits.
"It's great to score 15 runs. It's a good way to end the half," Grossman said. "We've been playing some good baseball. We'll recharge in the next couple of days and get back after it."
OFF THE BASE -- BARELY
Rosario, coming off a four-hit game for the Twins on Saturday night, clearly slid into second base ahead of the tag in his first at-bat in the second inning Sunday. Banister asked for a replay review, which showed Rosario's foot just briefly lost contact with the bag while 2B Rougned Odor was still applying a tag. The safe call was overturned for the second out, and Suzuki then had what was an inning-ending flyball instead of a likely sac fly to leave Grossman stranded at third base.
Vargas had his third homer in six games since being called up July 4. ... Odor had two errors in the eighth.
Twins: CF Byron Buxton missed his second game because of a bruised right knee sustained in the first inning Friday night when he crashed into the wall. Buxton was available, but Molitor wanted to give Buxton more time to get him "back feeling good" instead of playing just one more game before the All-Star break.
Rangers: RHP Keone Kela (right elbow) was scheduled to pitch in relief at Double-A Frisco for the second consecutive game Sunday night. If all goes well, he could rejoin the Rangers after the All-Star break.
Twins: Minnesota opens a three-game series Friday at home against AL Central-leading Cleveland.
Rangers: After the All-Star break, the Rangers open a 10-day, nine-game road trip Friday with an interleague series at the Chicago Cubs.
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