Elwin Soto defended his WBO light-flyweight title with a slick performance against former minimumweight king Katsunari Takayama.
But it was the manner of the stoppage that irked many in the stadium. Takayama was fighting his way back into the contest.
However, he was getting tagged clean too often, and referee Laurence Cole had seen enough in the ninth session.
Booed rung around the arena as Takayama and manager Sean Gibbons questioned the stoppage.
Takayama then decided to put on a show in the middle of the ring by shadow boxing and proving he was okay. Soto gets the W, though.
Kieron Conway dropped Souleymane Cissokho but found himself on the wrong end of a debated split decision.
Despite the knockdown, which happened in the ninth round, undoubtedly Cissokho had the upper hand.
However, Conway got the nod 97-92 on one of the judges’ scorecards. The other two carded 96-93, 95-94 the other way.
Heavyweight Nagy Aguilera looked for a way out of his clash with upcoming contender Frank Sanchez and found one in the sixth round.
A cuffing blow that initially hit the shoulder and followed through to graze the back of Aguilera’s head was all it took for the pullout.
In a borderline Oscar-worthy performance, Aguilera made a massive meal of the situation to stop the fight.
The crowd booed Aguilera as the third man in the ring took the contest to the scorecards, avoiding a knockout loss.
Sanchez took the farcical decision as Aguilera did nothing to enhance his reputation with his unwarranted complaints.
Marc Castro had too much in his locker for Irving Castillo at the super-featherweight dominated proceedings.
Hurting Castillo in every round, Castro got the job done before the end of the four in his third appearance on a Canelo card.
Hot on the heels of his brother, lightweight Keyshawn Davis also recorded a triumph on the bill via a points decision.
Despite having Jose Antonio Meza in trouble on more than one occasion, Davis had to settle for a unanimous verdict.
Davis heads to 3-0.
Welterweight Christian Alan Gomez Duran dropped Xavier Wilson heavy in the second round to end the contest before it had a chance to get going.
The referee waved Wilson off to his disgust but wasn’t taking any chances. A 20th career victory for Duran.
In the opener on the preliminary undercard, super-lightweight Kelvin Davis moved to 2-0 but not without a scare along the way.
Jan Marsalek, a more experienced former MMA fighter, put Davis on the canvas towards the end of the contest.
Davis still got the nod to keep his perfect record intact.
Phil Jay is the Editor of WBN. An Auxiliary member of the Boxing Writers Association of America since 2018. And a member of the Sports Journalists’ Association. Follow on Twitter @PhilJWBN.