Oscar de la Hoya gets between Canelo Alvarez, left, and Daniel Jacobs during a weigh-in in Las Vegas. Photo: John Locher/AP

LAS VEGAS – Tempers flared as Saul “Canelo” Alvarez and Daniel Jacobs faced off at the weigh-in for their middleweight world title unification bout on Friday.

After a largely cordial build-up to Saturday’s fight at T-Mobile Arena, tension spilled over as the fighters put their heads together on stage, with former world champion turned promoter Oscar de la Hoya among those leaping into separate the snarling pair.

Mexican icon Alvarez, who is putting his World Boxing Association and World Boxing Council titles on the line, weighed in at 159.5 pounds.

Jacobs, the International Boxing Federation champion, tipped the scale at 160 pounds.

Alvarez, who brings a record of 51-1-2 with 35 knockouts to the bout, hasn’t fought since dismantling Britain’s Rocky Fielding inside three rounds in December to claim the WBA super-middleweight belt.

Jacobs has won three straight on points since a bruising 12-round loss to Gennady Golovkin in 2017.