Pelf's similarity scores are eerily fascinating and really tell you nothing: Similar Pitchers through 26 - and what they did after age 26 Johnny Marcum (982) - 1933-1939, so it's largely irrelevant. Todd Stottlemyre (980) - Very Pelfian numbers in the AL, but turned it on in STL and had a pretty solid second half of his career. Kip Wells (975) - Went on to lead the NL in losses with PIT in 2005 (18) and with STL in 2007 (17), then imploded. Was a Duck in 2010. Ricky Bones (973) - Became a middle reliever, then a pitching coach. Pete Redfern (973) - Went 5-11, 6.58 in 1982 at age 27, then vanished. Jason Marquis (973) - Led the NL in losses in 2006 (17) at 27, and despite Metly overtures, has been largely forgettable. Adam Eaton (973) - Got progressively worse each year; out of baseball at 31. Jason Schmidt (970) - Got more productive, actually; three ASG appearances and two near-Cy Youngs in his 30s. Pat Hentgen (969) - Won a Cy Young at 27 with Toronto, then grew crazy meatchops and started to wash out two years later. John Lackey (969) - Lit up the AL with Anaheim, but has been pedestrian in Boston the last two years and is now 32. Most Similar by Ages 24. John Lackey (992) 2 3 4 5 6 7 8 9 10 C 25. Jason Schmidt (985) 2 3 4 5 6 7 8 9 10 C 26. Johnny Marcum (982) 2 3 4 5 6 7 8 9 10 C