Complex sentence: The Haye camp protested the choice of Gino Rodriguez as referee for the fight, because Rodriguez had refereed some of Klitschko's other fights (including his loss to Corrie Sanders).
Split into simpler sentences: The Haye camp protested the choice of Gino Rodriguez as referee for the fight. They were complaining about it because Rodriguez had refereed some of Klitschko's other fights (including his loss to Corrie Sanders).