FORT LAUDERDALE, Fla. (AP) _ David Santos used a fourth-round flurry to win the vacant NABF super-featherweight title with a technical knockout of Ernest Koffi on Sunday.

Santos, of St. Petersburg, stunned Koffi with a right to the head, sending his opponent stumbling toward the ropes. He followed up with 15 unanswered combinations of lefts and rights to the head.

Referee Frank Santore then stopped the fight, at 1:38 of the round.

The Santos-Koffi bout earned title designation on Saturday, when the original title bout between Carlos Hernandez and James Armah was canceled after Armah came down ill.

Santos improved his record to 35-2 with 24 knockouts.

Koffi, of Decatur, Ga., twice stunned Santos with rights to the head early in the bout, but failed to capitalize. In the second round, he caught Santos with another right to the head and followed with additional scoring rights.

One round later, Koffi (32-7) again caught Santos with two rights, sending him to the ropes. But Santos fought his way out of danger and took the bout back to the middle of the ring by connecting with combinations to the head.

Both Santos and Koffi weighed 128 for Sunday's bout.

In another bout, Ghana's Napoleon Tagoe (19-2) shocked cruiserweight contender Ramon Garbey by scoring a majority decision.

Garbey, a former Cuban national team member and currently ranked second by the WBC and fifth by the IBF, fell to 14-1.