And then there were four! That's right, after beginning with 16 rocking tracks that represented the spirit of football, the 2013 Loudwire Rock Bowl has four songs still standing.

Metallica's hard-hitting classic 'Seek and Destroy' advances to face Avenged Sevenfold and their inspirational track 'Seize the Day. Meanwhile, in the other half of the bracket, Pantera's thrashy 'F---ing Hostile' survived and advanced to meet up with the equally brutal 'Wait and Bleed' from Slipknot.

Which of the remaining four acts have the best football anthem? That's for you to decide. You can vote for your favorites in the semifinals between now and this Friday (Feb. 1) at 10AM ET to see who will advance to face each other in the 2013 Loudwire Rock Bowl championship round. And remember, voting is allowed once per hour, so vote now and vote often to see your favorite football anthem advance.