Joseph Diaz came through his world title eliminator with late replacement Rafael Rivera after twelve round prior to the GGG v Canelo main event at the T-Mobile Arena.
A dominant Diaz was taken to the scorecards before securing a 25th career win 120-108 and 119-109 (twice).
Diaz, 24, leapfrogs Carl Frampton to be named WBC number one contender to Gary Russell Jr.
In an undefeated collision at super-bantamwieght, Diego De La Hoya dominated former world title holder Randy Caballero to improve his winning streak.
Oscar’s cousin notched a 20th pro win on the scorecards after ten rounds to pick up the NABF championship.
Ryan ‘Blue Chip’ Martin controversially moved to 20-0 with a disputed split decision win over Francisco Rojo.
The 24 year-old overcome a point deduction for hitting low to card a 96-93, 95-94 victory, although one judge had the contest 98-91 the other way.
Early fights saw Serhii Bohachuk defeat Joan Valenzuela via second round stoppage, Marlen Esparza win over six rounds for the first time and Vergil Ortiz extend to 7-0 with an early knockout.
*Nicola Adams fight called off late on Saturday due to opponent failing medical