"My love of football has really grown. I've really gotten really attached to the sport," Williams said Friday. "I think football players are the ultimate athlete. I think tennis players are too, but we're not risking our lives out there."
Williams joined with Tide to host a rooftop party Friday attended by Terrell Owens, Kelly Rowland, Gabrielle Union, Pete Wentz and sister Serena, among others.
Serena - who just won the Australian Open championship, as well as the doubles title with Venus
- said she'd like to change football to see more dancing celebrations in the end zone after touchdowns. She also picked her favorite for the Super Bowl
- the Indianapolis Colts.
That might mean good news for the New Orleans Saints, though: "I keep rooting for the losing team, so this could be trouble."
Wentz also was rooting for New Orleans because he loves the city, but admitted that he's not much of a football fan: "I only recently found out as of two nights ago that I like a sport other than soccer, and that's basketball."