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Darryl Strawberry’s pinch-hit grand slam is the big blow in the Yankees’ 9-run ninth inning to come from behind to defeat the A’s, 10 – 5 in the second game of a doubleheader. It is Strawberry’s second pinch-hit slam of the season, setting a new American League record. It also matches the National League mark held by his former manager Davey Johnson and Mike Ivie, both set in 1978. New York also wins the first game of the twinbill, 10 – 4.

On August 4, 1998 — Darryl Strawberry’s pinch-hit grand slam is the big blow in the Yankees’ 9-run ninth inning to come from behind to defeat the A’s, 10 – 5 in the second game of a doubleheader. It is Strawberry’s second pinch-hit slam of the season, setting a new American League record. It also matches the National League mark held by his former manager Davey Johnson and Mike Ivie, both set in 1978. New York also wins the first game of the twinbill, 10 – 4.

Source:
Baseball Reference August 4
National Pastime
Retro Sheet
Hall of Fame
SABR Games Project
Replay The Game