"There are FOUR lights." *whacks the ball*
Sports in Trek? There are a few invented ones, like Parises Squares (which I don't think we've ever actually seen) and Velocity (played by Janeway and Seven). There's that game Bashir liked to play, not sure if it was made up or not or not, about playing tennis off a wall. We know that people still ski and swim, although it's unclear whether there are still competitions. Fencing (Picard and Guinan). And then there's darts (Bashir and O'Brien), whose tournaments appear on TSN, but whose status as a sport I've always found dubious.
Fictitiously yours, Trent Roman