MIAMI (Interstat) — Heriberto Hernández launched a tiebreaking two-run homer in a four-run fourth inning, and Max Meyer remained unbeaten as the Miami Marlins defeated the San Francisco Giants 6-3 on Saturday evening at loanDepot Park.

Miami improved to 39-38, while the Giants fell to 31-45. The announced attendance was 22,643, and the game lasted 3 hours, 8 minutes.

Meyer worked five innings, allowing seven hits and two earned runs while striking out seven. He improved to 8-0, the only Miami starter without a loss this season. Pete Fairbanks pitched a perfect ninth for his 11th save, striking out two. Trevor McDonald took the loss, falling to 2-5 after giving up six runs – four earned – over 3 2/3 innings.

The Giants struck first in the second inning. Jung Hoo Lee doubled and scored on a single by Drew Gilbert, who later drove in another run with a double. San Francisco added single runs in the fourth and eighth, but the Marlins answered each time.

Miami opened the scoring in the first. Otto Lopez reached on an error by Giants first baseman Rafael Devers, moved to third on a walk and scored when Owen Caissie drew a bases-loaded walk. The Marlins tied the game in the second after Joe Mack singled, advanced on catcher interference and eventually scored on a two-out error by McDonald.

The decisive frame came in the fourth. Esteury Ruiz was hit by a pitch to start the inning. Jakob Marsee singled him home, tying the game at 2. Otto Lopez followed with a single, and Kyle Stowers walked to load the bases with no outs. Xavier Edwards grounded into a double play, but Marsee scored to give Miami a 3-2 lead. Hernández then crushed a 1-0 pitch to left field for his seventh home run of the season, scoring Lopez and pushing the advantage to 6-2.

Hernández finished 1-for-3 with the homer and two RBI. Marsee went 2-for-4 with a double, an RBI and two runs scored. Caissie added a single and an RBI.

San Francisco managed to push across a run in the eighth. Lee doubled for the second time, moved to third on a popout and scored on a double by Casey Schmitt, his second hit of the night. Schmitt finished 2-for-4 with a double, a home run and two RBI. Gilbert also collected two hits, including a double and a single, and drove in a run. But the Giants could not get closer.

Miami’s bullpen held the lead after Meyer departed. Cade Gibson allowed one earned run on one hit in the seventh, striking out one. Fairbanks closed it out with a clean ninth, striking out two.

The Giants had 10 hits to Miami’s six but left eight runners on base. Edwards, who entered as the Marlins’ leadoff hitter, went 0-for-5. Ruiz went 0-for-2 before leaving the game. Leo Jiménez was hit by two pitches but did not record a hit.

The game was the second of a four-game series. Miami won the opener 4-3 on Friday. The teams conclude the series Sunday, then the Marlins host Texas for a three-game set starting Monday. The Giants return home to face the Athletics on Tuesday.

Interstat’s game simulator had projected a final score of Miami 6, San Francisco 5. Interstat’s ELO system gave the Marlins a 53.60 percent probability to win. Miami was installed as a pregame favorite with a spread of minus-1.5. The total of nine runs went under the over-under line of 7.5.