A weekly examination of the San Francisco 49ers' quarterback play.Rewind: It was a weird one. The 49ers blew out Houston 34-3. The offense was fine, Colin Kaepernick didn't look terrible. But he completed just six passes and had a stretch of seven straight incompletions. Still, Kaepernick was part of the reason the 49ers won big.Fast-forward: After a tough early-season slate, the schedule starts to ease a bit. The 49ers host Arizona on Sunday.