The biggest difference has been the warm temperatures and zero cloudy/rainy days, basically since football season started. Since they water it every day, they haven't had any issues getting it to grow.
The biggest issues in recent years have come as the bermuda has started to go dormant and they've overseeded and then failed to get the blend they they overseeded with to take hold. They haven't done that this year because there hasn't yet been a hard frost, so the bermuda blend is still growing.
It's great for the players and for the appearance, but the reality is that most of us on this board could have kept the field green this year. I still don't have a lot of confidence in the group over there.
That said, the problems we had the last couple of years weren't unique to Tennessee. But if you look at the other schools that had significant turf problems the last couple of years as well, like Georgia, Auburn, North Carolina, South Carolina, and Clemson you'll notice that they aren't having problems this year. All those crews didn't suddenly get smarter. They just had more favorable conditions.
They practiced on the turf exactly one fewer time this season than they did last year. The only reason they skipped that scheduled day was because a local business had rented out the west club for a client meeting and Butch didn't want to practice in front of 300 people with camera phones.