Harbaugh had been playing the decision close to the vest for the last two weeks, but it comes as no great surprise that he eventually went with his promising second-year QB.
Alex Smith was putting together one of his best seasons as a professional in 2012, completing 70% of his passes while throwing for 1,731 passing yards, 13 TD's and 5 INT's this season. However, Kaepernick's running and play-making ability gives the San Francisco offense another dimension.
A 6'4 230 dual-threat QB from Nevada, Kaepernick had been receiving playing time as the 49ers Wildcat QB this season, but when Smith went down with a concussion two weeks ago, he grabbed control of the 49ers offense and hasn't looked back.
The 25-year old has completed 64% of his passes and thrown for 680 yards, 3 TD and 1 INT this season while also adding 214 yards and 4 TD's on the ground.