I think we don't know enough about Rivera to decide what kind of hitter he is. He has had success, but not enough plate appearances. Hall, well I still don't trust him against righties. He hasn't hit them worth anything in over 2 years. Kendall has pretty equal platoon split. He has a better OBP(2006-2008) than Rivera(career, not enough PA to use his 3 year). The stats can be disected to support either opinion. I will stick with the sample that seems big enough rather than Rivera's 2006-2008 split. I am sure people who think Rivera is a better hitter will argue that he has improved as a hitter in the last few years and Kendall has gotten worse. I wouldn't argue against that at all. He still has a .331/.340 R/L OBP split. Maybe not, but I'm sure he has the decision of where in the rotation and right now he has Suppan about 4 spots too high. Doesn't matter what order the pitchers are in the rotation. This isn't a batting order where you can easily switch things up. All that matters is whose spot gets skipped in the rotation.