Kellen thinks learning on job good for Mark

Kellen Clemens on Mark Sanchez playing as a rookie - "You improve more by being out there. There is no substitute for live bullets. There is a lot of growth that can come from sitting back, from watching, but there is no substitute for being out there in live action and I think that's where I think a lot of the development comes to young QBs and you have to have that to continue to improve."

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