- A bold mid-season quarterback change will get a high-profile test when Colin Kaepernick leads the San Francisco 49ers against Aaron Rodgers and the visiting Green Bay Packers in the NFL playoffs on Saturday. Kaepernick replaced signal caller Alex Smith, after the former top draft pick came out with a concussion in Week 10 and San Francisco coach Jim Harbaugh decided to make the switch permanent, putting his faith in the second-year player. ...