SANTA CLARA -- Colin Kaepernick will not be on the sideline for today's game against the Cardinals but he is expected to start rehabilitating from shoulder surgery on Monday at the 49ers facility.

Kaepernick, who started the 49ers' first eight games at quarterback, had surgery Tuesday to repair what was described as an "extensive tear" in the labrum of his left shoulder. Kaepernick said he was injured during a Week 4 game against the Packers. He complained of pain in the shoulder following the team's Nov. 15 bye and a subsequent MRI revealed the tear.

His surgery was performed by a specialist in Vail, Colo. Kaepernick returned home late last week but was not part of the team's preparation for the Cardinals. He has been doing twice-a-day rehabilitation work at home as he recovers from the procedure and will begin a regimen with the team on Monday.

The recovery time from a surgery like Kaepernick's is between four and six months.