In the 1908 season, Tinker played all 157 games on the Cubs' schedule. In addition to batting .266, he led the team with 146 hits, six home runs, 14 triples, and a .391 slugging percentage. He also led the league with 570 assists. In the game characterized by Merkle's Boner, Tinker hit an inside-the-park home run against Christy Mathewson of the New York Giants, prior to Fred Merkle's baserunning gaffe. In the 1908 NL playoff game, which was a replay of the Merkle game, Tinker hit a leadoff triple off of Mathewson in the third inning, which ignited a four-run rally that helped Chicago to clinch the pennant. Tinker then batted .263 as the Cubs defeated the Tigers in the 1908 World Series in five games. Tinker also hit a home run off of Bill Donovan, the first home run hit in a World Series following the 1905 rules agreement.
