The San Francisco Giants crushed the Chicago Cubs 18-3 at Wrigley Field on June 5, 2026, powering their way to the largest single-game home run total in MLB this season and a career night from Matt Chapman.
Chapman supplied the knockout blows: a grand slam in the fourth inning off Cubs starter Edward Cabrera and a later three-run homer that left him with eight RBIs, tying a San Francisco-era single-game RBI mark. The club finished with seven home runs — the most by any team in a single game this season and their highest single-game total since April 2023.
Power arrived early and often. Willy Adames opened the scoring with a 427-foot two-run homer in the first inning, Casey Schmitt hit two homers, and Chapman’s grand slam represented the Giants’ third grand slam of the road trip. The slugging binge also placed the franchise among an odd historical footnote: San Francisco became the seventh team in MLB history to hit six grand slams in an 18-game span.
The raw numbers underline how extreme the surge has been. The club had posted totals of 25, 20 and 19 hits over the past week and run totals of 19, 12 and 18 in that stretch — an offensive stretch few teams can match. Against Chicago they turned that contact into the long ball repeatedly, forcing Cabrera and the Cubs staff into a surrender-and-restart night.
Even with the fireworks, the box score carries a persistent caveat: the pitching has not been steady. The same stretch that included an 18-run outburst also featured a loss in which San Francisco’s pitchers allowed 16 runs after the Giants had led 12-3. Earlier in that sequence, Logan Webb had taken a no-hitter into the seventh inning in a 1-0 win, a reminder of how sharply results are swinging from one start to the next.
That volatility is the game’s tension: San Francisco’s offense is currently capable of overwhelming opponents, but the staff has demonstrated the opposite capacity — to surrender games through prolonged collapse. The six grand slams in 18 games and the recent run of multi-hit nights create margin, but the unevenness on the mound means big performances with the bat don’t yet guarantee a steady climb in the standings.
Chapman’s eight-RBI night and the seven-homer output answer the immediate reader questions: seven home runs, Chapman drove in the most runs, and his night tied a San Francisco-era single-game RBI record. But those milestones also sharpen the outstanding issue for the team: can the offense keep producing at this level often enough to mask the pitching staff’s lapses? That is the single consequential question the Giants must resolve before a string of big wins becomes a dependable identity.
