Pop Tennis is the new POPular type of tennis with a twist on paddle tennis dating back to 1898 and is being played across the USA and around the world. POP Tennis is Tennis just played on shorter tennis courts with shorter and solid racquets, lower compression tennis balls and the same scoring and rules as tennis, except for one underhand serve. The sport is played on existing tennis courts with 60 ft. blended lines. There are over 30,000 of these lined courts in the US.