Matt Chapman hit a grand slam, added a sacrifice fly and then launched a three-run homer as the San Francisco Giants buried the Chicago Cubs 18-3 at Wrigley Field on June 5, 2026. He finished with eight RBIs, one of the biggest individual nights in a game that got out of hand fast.
That is why Chapman's name is being searched now: the Giants scored 18 runs, and he was at the center of nearly half of them. Willy Adames opened the barrage with a two-run homer in the first inning, Chapman delivered the six-run fourth with his grand slam, and the onslaught kept rolling until San Francisco had put up 16 runs before Chicago managed to score at all. Chapman and Casey Schmitt each left the yard twice, and the Giants ended with seven home runs overall.
Chapman did not just pad the margin. He drove in another run on a sacrifice fly in the fifth, then came back in the sixth with a three-run shot that pushed the Giants to 16-0 and effectively ended any suspense. Robbie Ray had already given San Francisco five shutout innings, and the Cubs were left staring at a 15-run loss, their largest margin of defeat of the season.
The ugly part for Chicago came before the scoreboard could soften it. The Cubs were shut out through the first five innings and trailed 16-0 before they finally scored three runs, which meant the game had been decided long before the late runs arrived. San Francisco also has now scored 30 runs over its last two games, a burst that turns one blowout into something more than a one-night outlier.
What comes next is less about one box score than whether Chapman can carry this kind of damage into the rest of the trip. For one night at Wrigley, he was the difference between a win and a rout, and the Giants looked every bit like a club that could keep piling on if pitchers keep giving them the same kind of mistake.
