 After coming out of the bullpen in game 1 of the 2003 National League Division Series against the Giants, Willis started game 4 of the series.In 5.1 innings pitched, Willis allowed 5 hits, 2 base on balls, struck out 3 batters but allowed 5 earned runs.Despite struggling with his pitching, Willis showcased his remarkable (for a pitcher) hitting ability by going 3-for-3 with a triple and scoring a run during that game, which the Marlins won 7–6 to advance to the NL Championship Series against the Cubs, the team that drafted Willis.