After 12 years in the Toronto organization, in his second season with the Philadelphia Phillies Halladay was huge. He won 19 games, while losing just six, and produced a WAR of 8.3. In 250.2 innings, his FIP was 2.20.

After winning the Cy Young the year before, Halladay went empty-handed as he made his final All-Star game showing at the age of 34.