SAN FRANCISCO (AP) – Madison Bumgarner became the first pitcher in 48 years to hit two grand slams in a season, and Buster Posey also hit a slam Sunday that boosted the San Francisco Giants over the Arizona Diamondbacks 8-4.
Posey and Bumgarner became the first batterymates in major league history to hit grand slams in the same game.
A double by Bumgarner helped set up Posey’s slam in the fifth. Bumgarner homered the next inning – he also hit a slam on April 11 against Colorado.
The last pitcher to launch two slams in a season was Tony Cloninger, who hit both in the same game for Atlanta on July 3, 1966, against the Giants at Candlestick Park.
Bumgarner (10-7) threw 6 1-3 innings to end a personal three-game losing streak. He gave up four runs and 10 hits, striking out five.