Scott- I wasn't speaking specifically about Rivera's numbers as a starter, but he sure was converted from starter to reliever quickly. At the time, I would think that conversion had more to do with his future prospects as a starter than his future prospects as a closer. He didn't exactly shine as a starter. I know this is a small sample size, but it backs up what I've said.
I do believe Rivera is the best closer of all time. I just don't believe the best pitchers in baseball are converted to closers. They remain starters.
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