SAN DIEGO — Mookie Betts hit a grand slam to cap an eight-run fourth inning and the NL West-leading Los Angeles Dodgers stunned the San Diego Padres 13-7 on Monday to win for the sixth time in seven games.

Betts drove a 3-0 pitch from Seth Lugo into the left-center seats, his 31st homer of the season, with one out in the fourth to give the Dodgers an 8-5 lead. Betts then punctuated his trot by pumping his fist several times as though he were pulling a train whistle, a celebration known as the “freight train” that was started by David Peralta, while his teammates repeated the gesture in the dugout.

Betts gave third base coach Dino Ebel a low-five before being warmly greeted at the plate by Kiké Hernández, James Outman and Miguel Rojas, who had been on base. Betts then gave Freddie Freeman, the 10th batter of the inning, a pat on the backside.

It was the sixth career slam for Betts, who was the AL MVP with Boston in 2018, and the 11th for the Dodgers to tie their single-season high.

Outman had four hits for the Dodgers, who took 3 of 4 in the series to improve to 8-2 this season against San Diego. The Padres beat the 111-win Dodgers in the NL Division Series last October.

Luis Campusano had two homers among his four hits for the Padres.

San Diego scored five runs off Tony Gonsolin (7-4) in the third, but that lead was gone nine batters into the fourth. Freeman hit a leadoff single, Will Smith flied out, Max Muncy walked, Peralta hit an RBI double and Jason Heyward doubled for two more runs.

Hernández walked, Outman singled and Rojas hit a bloop single to center to pull the Dodgers to 5-4. Betts then connected, much to the delight of the thousands of Dodgers fans in the sellout crowd of 44,455.

The slam chased Lugo (4-6), who allowed a career-high eight earned runs on eight hits in 3 1/3 innings.

The Dodgers scored five more runs in the sixth, including Hernández’s solo homer and Muncy’s two-run double.

Gonsolin allowed six runs on nine hits in six innings.

The Padres took their 5-0 lead in the third on Campusano’s two-run homer, Fernando Tatis Jr.’s two-run single and Manny Machado’s sacrifice fly.

REDS 5, MARLINS 2: Christian Encarnacion-Strand and Joey Votto homered on consecutive pitches by Eury Pérez in the fourth inning, and host Cincinnati stopped a six-game slide.

TJ Friedl had two hits and two RBI as Cincinnati improved to 10-14 since the All-Star break. The six-game slide matched the season high for the Reds, who remain in the thick of the playoff race.

AMERICAN LEAGUE

TWINS 9, TIGERS 3: Carlos Correa homered and drove in four runs as visiting Minnesota won its season-best fifth straight game.

The Twins (60-54) also got a homer and three RBI from Ryan Jeffers, improving to 15-8 since the All-Star break.

BLUE JAYS 3, GUARDIANS 1: Cavan Biggio hit a two-run homer to break a scoreless tie in the eighth inning after Toronto lost starting pitcher Hyun Jin Ryu to a knee injury, lifting the Blue Jays to a win at Cleveland.

Ryu was struck on the right kneecap by Oscar Gonzalez’s line drive that turned into the final out of the fourth, forcing him to exit with a bruised knee in his second start since undergoing Tommy John surgery in June 2022.