Bid on this gift certificate for one hour of Pickleball for up to four people at The Tennis and Fitness Centre in Oak Park.    Pickle-what? Pickleball is a multi-generational paddle sport created for all skill levels and combines elements of tennis, badminton and ping-pong. Pickleball is played both indoors or outdoors and can be played as singles or doubles. The rules are simple and the game is easy for beginners to learn, but can also develop into a quick, fast-paced, competitive game for experienced players.