6 – Danny Jackson (1993 – 1994)
Although pitching just two seasons with the Phillies, Jackson was a key part of the rotation during that time. He was a 12-game winner in 1993 and was an All-Star in 1994, going 14-6 with a 3.26 ERA and finished sixth in the Cy Young Award voting.
5 – Tommy Greene (1990 – 1995)
When Greene was healthy, he was one of the best pitchers in the National League. He has a no-hitter in his resume and was 16-4 in 1993 with 167 strikeouts in 200 innings. Greene was also a solid 13-7 with a 3.38 ERA in 1991. Unfortunately the rest of his career was injury-plagued, finishing his time in Philadelphia with 36 wins and a 4.02 ERA.