MIAMI -- When asked about what adjustments the Rangers¡¯ offense needed to make, manager Bruce Bochy replied with one word.

Confidence.

¡°We need to get that back, to have more swagger out there,¡± he said. ¡°I think we¡¯ve lost a little bit of that.¡±

Texas found the ¡°swagger¡± it needed to put up four runs against Marlins southpaw Ryan Weathers en route to a 7-0 win at loanDepot park.

The defending champs had struggled against lefties coming into Saturday's game, ranking No. 20 in MLB with a .233 batting average. They hit 14 homers despite having the 11th-most plate appearances against lefties to end the month of May.

June got off to a better start.

Robbie Grossman opened the scoring in the third inning with a double off an 85.4 mph sweeper, allowing Andrew Knizner to score. Bochy attributes Grossman¡¯s hit to opening the floodgates.

Grossman, a switch-hitter, was acquired in a trade with the White Sox on May 8 in order to address production issues against lefties. Last season, he slashed .309/.416/.536 against southpaws, and he is hitting .303 off them this year.

¡°I just try to be myself,¡± Grossman said. ¡°I know I¡¯m a good player and I know what I do well and I just try to stick to that.¡±

Shortly after Grossman's double, Adolis Garc¨ªa drove a hit into right field to score Corey Seager on a sacrifice fly.

¡°Garc¨ªa battled, he had two strikes on, he¡¯s trying to find his way to play but he got the job done,¡± Bochy said.

Seager was a large participant in the Rangers¡¯ offense, going 3-for-4 with a double. The shortstop reached base safely for the 24th consecutive game and recorded a hit in 14 straight.

With the newfound energy, the Rangers continued to extend the lead in the fourth. Josh Smith singled into right field, and a throwing error by Marlins right fielder Jes¨²s S¨¢nchez allowed Wyatt Langford to score.

Knizner returned to the plate and hit a sacrifice fly into right field to plate Smith for the fourth run of the game. Knizner hasn't gotten much playing time this season -- he had appeared in just 19 games before Saturday -- however he showed that he¡¯s ready to come out and contribute when needed.

¡°I was happy for Knizner because he hasn¡¯t gotten a lot of playing time, but for him to go out there and have a game like that when he hadn¡¯t played in a while, that¡¯s impressive,¡± Bochy said. ¡°It does elevate your club [when] you need somebody to pick you up, especially when you¡¯re sputtering a little bit.¡±

The Rangers¡¯ production bled into the final third of the game. After Grossman delivered again with an RBI single in the seventh, Langford hit a line drive into left field to score two more runs in the ninth.

¡°Honestly I wasn¡¯t able to watch much of what our offense did or how we produced those runs,¡± Rangers starter Michael Lorenzen said. ¡°I just knew I was given a lot of high fives in the dugout.¡±

Lorenzen kept the Marlins scoreless over 6 1/3 frames. He tied his season-high with seven strikeouts and allowed five hits on the day. The righty found his way out of a couple jams and battled his way through the Miami lineup.

Following the game, Texas¡¯ team batting average against lefties jumped to .240; they will get the opportunity to continue raising that number in the series finale against Miami southpaw Trevor Rogers.