Your guests will almost be able to hear the thwack and forth of a rally when you deck out your party with just the right court sense. Hit the theme and color scheme by decorating with lots of white tennis rackets. Tie them to the backs of chairs with lengths of green satin ribbon—then when it’s time to play? Just untie and show off your backhand! Place dozens of tennis balls in wire baskets within easy reach, so they can do double duty as decoration and a vital playing piece. Set your outdoor table with bright-green wavy place mats and place cards, and tie a fresh white linen napkin with a length of green satin ribbon. A Granny Smith apple at each place setting lends an outdoorsy freshness. For fresh centerpieces , create bitty bouquets of green and white chrysanthemums (a mix of regular and mini). Wrap them in bright-green tissue and display in lattice-covered tumblers that add to the net effect.