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Which college football stadiums will be the hardest for visiting teams to win in in 2013?

To make my predictions, I created a weighted formula.

First, I looked at the schedules of every FBS team over the past four years (2009-12). Teams must have played FBS football in each of the seasons to qualify. Then, I wrote down the records of their home games at their regular venues.

I didn’t include games at other sites, even if one team was home. For example, Syracuse “hosted” USC at MetLife Stadium in 2012, but since the Orange’s regular home venue is the Carrier Dome, I didn’t include this game.

Here’s the formula:

((2009 winning percentage + .025) + (2010 winning percentage + .050) + (2011 winning percentage + .075) + (2012 winning percentage + .100)) / 4 = 2013 predicted winning percentage

Why weighted winning percentages? I wanted recent history to count more.

For tiebreakers, I ranked the teams according to Athlon Sports’ 2013 preseason rankings.

With that, let’s see which 25 teams will best defend their home turf in 2013.