On October 10, 1904, 41-game winner Jack Chesbro of the Highlanders let loose a wild pitch in the ninth inning of the final game of the season. This snapped a 2-2 tie, allowing Pilgrims right-hander Bill Dinneen to claim victory as the Boston team claimed the AL pennant. Dinneen finished the year having completed every game he started during the season, throwing 337.2 consecutive innings without relief during his streak of 37 consecutive complete games.
The final game of the first-ever World Series was played in October 13, 1903 between the Boston Americans (Red Sox) and the Pittsburgh Pirates. In Game 8 of the best-of-nine Series, Boston defeated Pittsburgh, 3-0, to take the championship 5 games to 3. Boston’s Bill Dinneen earned the victory over Deacon Phillippe of the Pirates.