The Boston Red Sox defeated the San Francisco Giants 6-4 in the opening game of their three-game MLB series on Friday, August 21, 2026. Boston used a five-run third inning to take control before holding off a Giants comeback at Fenway Park.
Willson Contreras provided the biggest offensive moment with a three-run home run, while Wilyer Abreu went 3-for-4 and delivered a crucial RBI triple. Sonny Gray also played a major role, earning his 16th win after six innings of work.
For San Francisco, Rafael Devers made his emotional return to Fenway Park and homered, but his performance could not prevent the Giants from falling to Boston.
Giants vs Red Sox Score
The Red Sox won 6-4 over the Giants.
Boston recorded 11 hits and scored five runs in the third inning. San Francisco answered with three runs in the fourth to make it a one-run game, but Boston added an insurance run in the sixth and its pitching staff protected the lead.
The victory gave Boston its third win in four games, while the Giants lost their fourth game in their last five outings.
Willson Contreras Powers Boston’s Big Inning
Contreras was the key figure in Boston’s five-run third inning.
After Wilyer Abreu singled with two outs, Contreras crushed a changeup 450 feet into deep left field for a three-run homer. The blast gave Boston a 4-1 lead and forced Giants starter Logan Webb into a difficult situation.
Boston continued attacking after the home run. Adley Rutschman and Caleb Durbin followed with singles, while Jarren Duran was hit by a pitch to load the bases.
Andruw Monasterio then drew a bases-loaded walk before Mickey Gasper was hit by a pitch, allowing Boston to extend its advantage to 5-1.
Wilyer Abreu Stars for Red Sox
Abreu delivered one of the best offensive performances of the game.
The Boston outfielder finished 3-for-4 and recorded an RBI triple in the sixth inning. His extra-base hit provided Boston with an important insurance run after San Francisco had rallied.
Abreu’s triple allowed Nick Sogard to score from first base, giving Boston a 6-4 advantage.
Ceddanne Rafaela and Jarren Duran also recorded multiple hits as Boston finished the game with 11 hits.
Rafael Devers Homers in Return to Fenway Park
Rafael Devers was at the center of attention before and during the game because of his return to Fenway Park.
Devers spent the first eight-plus seasons of his career with the Red Sox before joining the Giants. He received a mixed reception from the Fenway crowd, with boos during pregame introductions and his first at-bat.
Boston also honored Devers with a tribute video following the first inning, producing cheers from sections of the crowd.
Devers responded with a home run in the fourth inning.
Facing Sonny Gray, Devers sent a fastball 412 feet over the center-field wall. It was his 96th career home run at Fenway Park and his first at the stadium as a visiting player.
The home run came immediately after Drew Gilbert’s two-run blast and helped the Giants cut Boston’s lead to 5-4.
Logan Webb Has Difficult Outing
Giants starter Logan Webb struggled to contain Boston’s offense.
Webb allowed five runs on six hits over just 2⅔ innings. He struck out two and walked three before being removed during Boston’s five-run third inning.
It was Webb’s shortest start of the 2026 season.
The Giants had hoped Webb would provide stability in the series opener, but Boston’s hitters quickly put pressure on him and took advantage of mistakes in the strike zone.
Sonny Gray Earns 16th Victory
Sonny Gray provided Boston with six innings of work and earned his 16th victory of the season.
Gray allowed four runs on seven hits while striking out six and walking two. His 16th win moved him level with Philadelphia Phillies starter Cristopher Sanchez for the MLB lead in wins.
Although the Giants scored three times in the fourth inning, Gray responded by retiring San Francisco in the next two innings on just 16 pitches combined.
Boston’s bullpen then finished the job.
Erik Miller and Alec Gamboa each recorded scoreless innings before Aroldis Chapman closed the game. Chapman walked one batter but struck out three in the ninth inning for his 28th save.
Giants Rally but Boston Holds On
San Francisco’s fourth-inning comeback briefly changed the momentum.
Drew Gilbert hit a two-run homer to bring the Giants closer, and Devers followed with his solo shot to center field. The back-to-back home runs cut Boston’s lead to 5-4.
However, the Giants could not produce another scoring rally.
Boston regained control in the sixth inning when Abreu’s RBI triple brought home Sogard. The Red Sox then kept San Francisco off the scoreboard during the final three innings.
Giants vs Red Sox Key Takeaways
Boston’s offensive production was the biggest difference in the game. Contreras’ three-run homer sparked the decisive third inning, while Abreu contributed three hits and the insurance run.
Gray’s six innings also helped stabilize the Red Sox after the Giants’ fourth-inning rally. Boston’s bullpen then completed the victory without allowing another run.
For San Francisco, Devers’ home run was a memorable highlight, but Webb’s short outing put the Giants in a difficult position.
The Giants entered the game with a 52-76 record and now need to respond in the remaining games of the series.
What Comes Next for the Giants?
The Giants will look to bounce back in the next game against Boston.
Blade Tidwell is scheduled to start for San Francisco. He enters the matchup with an 0-0 record and a 4.33 ERA.
Tidwell will be seeking a better performance after allowing six runs and issuing five walks over 4⅓ innings against the Colorado Rockies in his previous appearance.
Boston, meanwhile, will try to build on its strong start to the series.
Giants vs Red Sox Final Result
The Red Sox secured a 6-4 victory over the Giants behind a huge third inning, Contreras’ three-run homer, Abreu’s three-hit performance and Gray’s 16th win of the season.
Devers made his Fenway return memorable with a home run, but San Francisco could not complete its comeback after cutting the deficit to 5-4.
Boston’s offense and bullpen ultimately proved decisive, giving the Red Sox an early advantage in the series.
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