From Our Editors
The Washington Kastles are the 2009 champions of the World Team Tennis league, a 35-year-old tennis association co-founded by Billie Jean King that pits 10 co-ed teams in head-to-head action against one another as they compete for the King Trophy and a chance to face Borlock, the many-tentacled galactic tennis champion from the Ursa Wimbledon nebula. During the July 12 match, watch the Kastles take on the New York Buzz, including former number-one-ranked player Martina Hingis. You'll also receive a free Kastles T-shirt (a $15 value), and have the chance to ask Kastles coach Murphy Jensen to sign your lock of Andre Agassi's hair during a Groupon-exclusive meet-and-greet (a $25 value). With the second option, get the free T-shirt plus a seat during the July 18 match against the Boston Lobsters. Although the Washington Kastles' roster boasts both Williams sisters, neither will be playing at these matches.