1978 – The Yankees erupt for five runs in the 7th inning to take a 5 – 3 lead over the Orioles before heavy rains force a delay of the game. Thanks to the stalling tactics of Earl Weaver and some slow-moving Baltimore groundskeepers, the game is called, and the score reverts to the last complete inning. This rule will be changed in 1980, and the game today would have been suspended. The Orioles win, 3 – 0, with Scott McGregor the winner.

On August 13, 1978 — 1978 – The Yankees erupt for five runs in the 7th inning to take a 5 – 3 lead over the Orioles before heavy rains force a delay of the game. Thanks to the stalling tactics of Earl Weaver and some slow-moving Baltimore groundskeepers, the game is called, and the score reverts to the last complete inning. This rule will be changed in 1980, and the game today would have been suspended. The Orioles win, 3 – 0, with Scott McGregor the winner.

Source:
Baseball Reference August 13
National Pastime
Retro Sheet
Hall of Fame
SABR Games Project
Replay The Game