Pernell Whitaker (born January 2, 1964) is an American former professional boxer who competed from 1984 to 2001, and has since worked as a boxing trainer. He is a four-weight world champion, having won titles at lightweight, light welterweight, welterweight, and light middleweight; the undisputed lightweight title; and the lineal lightweight and welterweight titles. In 1989, Whitaker was named Fighter of the Year by The Ring magazine and the Boxing Writers Association of America. From 1993 to 1997, The Ring ranked him as the best active boxer in the world, pound for pound.

He met Oscar De La Hoya on April 12, 1997, in Las Vegas, Nevada. Whitaker, defending his WBC championship and the mythical status as the best boxer in the world, pound for pound, succeeded in making De La Hoya look bad through his crafty defense, but he was unable to mount a sufficient offense to convince the judges. Whitaker was awarded an official knockdown in the 9th round and, according to CompuBox stats, outlanded De La Hoya in overall punches and connect percentage, using the jab as his primary weapon; but De La Hoya threw and landed almost twice as many power punches & had a slightly higher power punch connect percentage than Whitaker, which may have been the key factor in De La Hoya winning by a disputed unanimous decision. At the end of the fight, the judges' scores were 111-115, 110-116, 110-116. The fight was a whole lot closer than what the final scorecards showed, and there were many boxing analysts and sportswriters at ringside who felt that Whitaker actually won the fight. It was another controversial decision against Whitaker, but it wasn't seen as a blatant robbery like the Ramirez or Chavez fights. For his part, De La Hoya wasn't too pleased with his own performance against Whitaker and had hinted at a possible rematch to prove that he could do better against him. But Bob Arum, De La Hoya's promoter at that time, decided against it. Whitaker's next bout was against Russian-born fighter Andrey Pestryaev in a world title elimination fight, where the winner would earn an automatic #1 contender spot for the WBA Welterweight crown, held at the time by Ike Quartey. Whitaker originally won the fight, but the win was nullified & changed to a No Decision after he failed a post-fight drug test.

Using a quote from the above article, answer the following question: Who won the match?
Whitaker was awarded an official knockdown in the 9th round