The two welterweights waged war until an accidental clash of heads in the fourth round injured Collazo, forcing the ref to halt the bout Saturday night on FOX PBC Fight Night.
Alexander, the two-division world champion, and rising 175-pounder Elbiali share their amazing stories on this week's loaded episode.
A rejuvenated Ivan Redkach shocked former two-division champion Devon Alexander, scoring a sixth-round TKO in their welterweight headliner on PBC on FS1.
Middleweight contenders Hugo Centeno Jr. and Willie Monroe Jr. clash in co-main event on card that takes place at the Soboba Casino Resort in San Jacinto, California.
Andre Berto edges Devon Alexander by split-decision in showdown of former welterweight champs on PBC on FOX
Former middleweight champ Peter Quillin defeats top contender J'Leon Love and former super lightweight titleholder Sergey Lipinets is victorious in his welterweight debut.
Pair of former welterweight world champions are facing a must-win situation to secure 147-pound relevancy when they meet in the main of event of PBC on FOX tomorrow night in New York.