Those singles groups have thought of everything, including Round Robin Tennis Nights. Every Wednesday at Brian Piccolo Park (9501 Sheridan St., Cooper City), the Racquet Center hosts intermediate-level tennis, socializing, and refreshments. Go from playing "singles" to "doubles," put the ball "in their court," and score some points. Games start at 7:30 p.m., and cost is $10 per person. Ages 18 and older. Call 954-437-2661 to register.