The San Francisco 49ers' reported interest in free-agent quarterback Seneca Wallace affirms concerns over the situation behind starter Colin Kaepernick. The team isn't necessarily banking on Colt McCoy, Scott Tolzien and B.J. Daniels.2008-12 QB Stats as StarterWallace, like current 49ers backup Colt McCoy, played under current 49ers offensive assistant coach Eric Mangini in 2010. Mangini was the Cleveland Browns' head coach then.The chart shows starting stats for Wallace and McCoy since 2008.