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AP San Francisco 49ers tight end Vernon Davis walks off the field after their NFL football practice in Santa Clara, Calif., Friday, Jan. 20, 2012. The 49 - Photo

San Francisco 49ers tight end Vernon Davis walks off the field after their NFL football practice in Santa Clara, Calif., Friday, Jan. 20, 2012. The 49

Friday January 20, 10:53 PM
San Francisco 49ers tight end Vernon Davis walks off the field after their NFL football practice in Santa Clara, Calif., Friday, Jan. 20, 2012. The 49ers are scheduled to host the New York Giants in the NFC Championship game on Sunday, Jan. 22. (AP Photo/Eric Risberg)