Dec 7, 2014; Oakland, CA, USA; Oakland Raiders outside linebacker Khalil Mack (52), defensive tackle Antonio Smith (94) and defensive end Justin Tuck (91) sack San Francisco 49ers quarterback Colin Kaepernick (7) during the fourth quarter at O.co Coliseum. The Oakland Raiders defeated the San Francisco 49ers 24-13. Mandatory Credit: Kelley L Cox-USA TODAY Sports