Complex sentence: While their opponents do not interfere with the Globetrotters hijinks while on defense they play a serious game when in possession of the ball, about 20 to 30 percent of a game is "real".
Split into simpler sentences: While their opponents do not interfere with the Globetrotters hijinks while on defense they play a serious game when in possession of the ball. About 20 to 30 percent of a game is "real".