Cameron Diaz: Alex Rodriguez's Fenway Fan!

Cameron Diaz cheers on her boyfriend Alex Rodriguez at Fenway Park on Saturday (April 9) in Boston, Mass.

The 35-year-old baseball player’s team, the New York Yankees, took on the Boston Red Sox and won 9-4.

Cameron sat in a private box with the wives and girlfriends of other players, including Joanna Garcia, who is married to Yankees outfielder Nick Swisher.

Earlier in the week, Cameron and Alex worked out together in New York City.