One Love: U.S. Open Couples!

From Chelsea Clinton & Mark Mezvinsky's PDA to Gwen Stefani & Gavin Rossdale's cheer section, see which star pairs are Grand Slam fans!

DEREK & MINKA

New York Yankees captain Derek Jeter and his girlfriend Minka Kelly headed into "enemy" territory (the U.S. Open is held next to CitiField, home of rival N.Y. baseball team the Mets) to watch James Blake's Sept. 4 match.