CARSON, Calif. — Nonito Donaire added the International Boxing Federation 122-pound title to his World Boxing Organization belt this month with a unanimous decision over South Africa’s Jeffrey Mathebula, earning his 28th consecutive victory in a unification bout.

Former middleweight champion Kelly Pavlik also earned a comfortable unanimous decision over Will Rosinsky at the Home Depot Center south of Los Angeles.

Donaire (29-1, 18 KOs), the four-division champion born in the Philippines and raised in California’s Bay Area, landed bigger shots throughout the bout. He knocked down Mathebula with a vicious left hook in the fourth round, but Mathebula used his four-and-a-half-inch height advantage and a tremendous work rate to keep the bout competitive.

The "Filipino Flash" finished with a strong 12th round, winning comfortably on all three judges’ scorecards.