Colin Kaepernick starts for 49ers

Colin Kaepernick started at quarterback Sunday for the San Francisco 49ers against the New Orleans Saints.

49ers coach Jim Harbaugh on Friday didn't name a starting quarterback for Sunday's game, however a team source had told ESPN that the team was proceeding with plans to start Kaepernick.

Harbaugh said it serves no purpose to his team and organization to let anybody know what his plan at quarterback is for Sunday.

Kaepernick got the nod instead of Alex Smith, who sustained a concussion on Nov. 11 in a 24-24 tie against the St. Louis Rams. Smith missed Monday night's 32-7 rout of the Bears during which Kaepernick went 16 of 23 for 243 yards, two touchdowns and an impressive passer rating of 133.1 in his first NFL start.

A team source told ESPN last week that Smith has been cleared medically after passing his concussion testing.

On Friday, Harbaugh said Smith has gone several days without exhibiting any concussion-like symptoms.

Information from The Associated Press was used in this report.