Complex sentence: Charlotte was due to play Florida and the Hawaiians were due to play Southern California in wild-card games; the wild-card winners would advance to the semifinals, and the semifinal winners would play in the World Bowl.
Split into simpler sentences: Charlotte was due to play Florida and the Hawaiians due to play Southern California in wild-card games. The wild-card winners would advance to the semifinals, and the semifinal winners would play in the World Bowl.