Ryan Kielczweski of Quincy, Mass., won a one-sided unanimous decision over Jose Hernandez of Atlanta on Saturday night at the Portland Expo to claim the IBA Americas super featherweight championship.

The loudest cheers were for the four Maine boxers on the pro undercard and the two amateurs who completed a fight program that some in the estimated crowd of nearly 3,000 called historic. The pro fight card was the first at the Expo in 20 years.

Russell Lamour of Portland won a unanimous six-round middleweight decision over Deivison Ribiero of Tampa, Fla. Lamour, 6-0 as a pro, did everything but knock him down.

Jimmy Smith’s first-round TKO of Robert Brando Hunt of Hyannis, Mass., was a big moment early. The Biddeford High graduate and ex-Marine with two tours of duty in Iraq attacked Hunt early.

Jorge Abiague of Portland fought for the first time in two years and won a four-round decision over Leonel Garcia in bantamweight. Brandon Berry of West Forks won a third-round TKO over Paul Souza of Somerville, Mass.

Heavyweight Joel Bishop of Clinton and middleweight Joe McKenna of South Boston, Mass., were the amateur winners.