I think he is worth more than Lilly. Suppan's ERA+ has been over league average 7 out of the last 8 seasons and the one year it was below 100, it was so by only 3 points. Lilly is far more inconsistent, but also has a higher ceiling. Lilly posted an ERA+ of 120 in '02 and '04. Suppan hit 120 in '05 but is consistently between 103-112. On the contrary, Lilly's ERA+ was 80 in '05 and 98 in '03. He has been following the pattern of good in the even years and bad in the odd. Suppan can also throw a ground ball much better than Lilly can. Sup's GB% lives at around 46% while Lilly's is only 35-36% while giving up significantly more flyballs. Lilly will make them miss more often with a higher K total and lower BAA (Suppan is clearly more hittable though not by a lot), but Lilly's flyballs in the NL Central could be dangerous. Wrigley is made for a groundball pitcher like Suppan. Suppan is only one year older than Lilly almost to the day, so age shouldn't be that much of a factor. If their costs are similar, the numbers seem to show an advantage to signing Suppan over Lilly. Edited for stupidity Additionally, in Lilly's 02 when he had the 120 ERA+, his BABIP was about 70 points lower than what his LD% projects. In 04 it was about 40 points lower than LD% projection. His LOB% was also significantly higher than league average (and his other years) in 02 and 04. His peripherals show that 02 and 04 were very much fluke years.