Detroit starter Drew Smyly allowed three runs - two earned - and five hits in 3 1-3 innings, and Brayan Pena also went deep.
Chase Utley hit his first homer of the spring for the Phillies.
The Tigers roughed up the Halladay for seven runs in 2 2-3 innings. The two-time Cy Young Award winner allowed six hits and walked four in his poorest outing this spring. He came in with a 2.16 ERA in three starts.
Halladay is coming off an injury-plagued year in which he had his fewest wins (11) since 2004 and the second-worst ERA (4.49) in his career.
