Kaepernick's backup options 

August, 22, 2013
8/22/13
2:38
PM ET
Per CSNBayArea.com's Matt Maiocco, the Niners have signed Seneca Wallace. He will compete for a roster spot with Colt McCoy, Scott Tolzien and B.J. Daniels.
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There's not much gray area at the top of the San Francisco 49ers depth chart at quarterback. Colin Kaepernick broke out last season, and ESPN's Ron Jaworski pulled no punches Wednesday when he said, "I truly believe Colin Kaepernick could be one of the greatest QBs ever."

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