PLAN A:
Since the family member scheduled a wedding during college football season, they are obviously very lame (unless one/both of the couple are deploying or rapidly dying of a terminal disease, in which I rescind this entire post). Blow off the wedding and stop by dinner with a nice gift. A nice gift for this couple will likely be some sort of sham pillow / duvet set or some equally frilly gift. Make a comment to the couple about how great the ceremony was, and how the church's sound system was so great you could hear everything clearly from the back rows. Slip an extra $40 inside one of the pillow cases as insurance that they will forgive you later if you are found out or ratted on by a nosy great aunt.
It's actually very smart to not show up to the wedding. If they get upset and write you off, you've saved yourself years of happy holidays. Do you really want to spend every Thanksgiving, Christmas, and New Year's with someone who can't understand the importance of a college football game? What if they decide to go around the room and have everyone talk about what they are thankful for while the Iron Bowl, The Game, or Good Old Fashioned Hate is on? How would you feel if they decide to hold a no-television family dinner during the Rose Bowl or Cotton Bowl? It's better that you learn their un-American ways now and part company if they are offended by a person's natural right to watch some football.
PLAN B:
Bring a tablet or mobile device, with headphones, to the ceremony. Paint the headphone cord to match your flesh tone and sit near the rear of the church. Put the tablet inside of a Bible/hymnal or the program. Be careful not to show too much excitement or displeasure at inappropriate times. If it helps you to calm down, bring a flask with you and sip as much as possible in the restroom immediately prior to entering the ceremony. Bonus points if you can con the kid running the AV booth to give you the church's WIFI password to improve your streaming quality.
Find the groomsmen and other male guests immediately after the ceremony. Unless the groom found all his friends at the dweeb convention, there are likely many football fans missing their teams play that afternoon. Between the male guests, you should be able to assemble enough mobile devices to catch up on all current games. Before dinner you should be able to all duck into a Sunday School room, which may even have a projector. Bring a converter cord or Chromecast and watch on the big screen, that is, if they don't have cable TV in the room. You should also be able to assemble enough flasks from the male guests to create a mini-bar, provided you can secure the appropriate mixers (i.e. ice cubes).
PLAN C:
Attend the bachelor party and pay the skankiest stripper you can find to do dirty things to the groom-to-be. Upload photos to Facebook and tag the Bride. *Note- This is a strict violation of bro code and you will likely not be invited to any future strip clubs with the boys, so do this at your own risk.