On October 1, 1978, On the last day of the season, Expo left-hander Ross Grimsley becomes the first 20-game winner in franchise history when he throws a five-hitter, beating St. Louis at Busch Stadium, 5-1. The 28 year-old southpaw, who finishes 20-11 for the fourth-place club, will compile a 124-99
More Washington Nationals history & fan-cave gifts →
Source: Historical record