I think at this stage you have to bring up guys like Glavine, Smoltz and even Wells or Mussina. I thought about Glavine, but with regards to Smoltz, it is hard to compare him to the rest because he spent 4 seasons in the bullpen. Although they were successful, was he not originally put in the bullpen because of longevity/injury concerns? Would that put him in the same boat that Pedro is in? Also, how do his stats as a reliever stack up against starting pitching statistics? At the same time, though, Schilling took a long time to launch his career as a starter and it wasn't until his late 20's that he became an elite starting pitcher. After looking closer at the stats, they are comparable, but Glavine has started his entire career and been the healthiest of the three over the last 20 years. He also has the most wins out of the group.