ROSEMONT, Ill.-- Erik Morales didn't have to wait for the result to be announced. Win or lose, this was it, and although he did not make history, he did go out in style.
WBC lightweight champion David Diaz denied Morales in his bid to become the first Mexican to win world titles in four weight classes with a thrilling unanimous decision on Saturday night.
Morales, an almost certain Hall of Famer, then retired before the winner was announced.
"This is it," said Morales, who had said he would fight once more in his hometown of Tijuana if he won Saturday. "I'm not going to fight anymore. I've taken far too many punches, particularly to the head area. Punches to the head are really beginning to bother me. Diaz is a very strong fighter."
Diaz (33-1-1) had Morales (48-6) against the ropes after a flurry late in the 12th round, but Morales countered. The crowd rose to its feet, and Diaz poured it on again, sending the challenger against the ropes and whipping the fans into another frenzy as the bout came to a finish.
Judge Herminio Cuevas scored it 114-113, Robert Hecko had it 115-113 and Nobuaki Uratani had Diaz winning 115-112.
• COLLEGE FOOTBALL -- Duke linebacker Michael Tauiliili has been suspended indefinitely for violation of team policies, coach Ted Roof said.
Tauiliili, a junior from Houston, Texas, led the Blue Devils in tackles in each of his first two seasons.
As a freshman in 2005, he posted 92 tackles and received freshman All-America and Atlantic Coast Conference defensive freshman of the year honors from The Sporting News.
• AUTO RACING -- Tony Kanaan held off protege Marco Andretti for the final 27 laps Sunday and won the Firestone Indy 400, a race marred by a spectacular wreck in which Andretti Green Racing teammate Dario Franchitti took a wild, upside-down ride.
The race began 4 1/2 hours late because of rain. Only eight of 20 cars that started the 200-lap event were running at the end.
There were a couple of crashes early in the race, including one that took out defending winner Helio Castroneves and Vitor Meira, but the big one came on lap 144 when Dan Wheldon, trying to overtake leader Franchitti, appeared to drive his right front tire into Franchitti's left rear.
• Lewis Hamilton learned a lot about his McLaren team after a stressful weekend of racing.
"How strong they are and how they deal with all the distractions," he said Sunday after winning the Hungarian Grand Prix for his third Formula One victory of the year. "I don't believe any other team could cope with it better."
McLaren was penalized for hindering his qualifying efforts.
• LOCAL GOLF -- Kristen Curley, a 10-year-old from Rock Hill, scored his first hole-in-one Sunday playing in the Rock Hill Country Club Junior Championships.
Curley, the daughter of Doug and Betsy Curley, aced No. 2, which played 80 yards from the juniors' tee. She used a 9-iron.
• PRO TENNIS -- Andy Roddick put a stop to John Isner's dream week by beating the unseeded American 6-4, 7-6 (4) to win his third Legg Mason Tennis Classic title.
Roddick, who also won in 2001 and 2005, won his 23rd ATP title by solving Isner's serve, which had carried him to five straight wins in third-set tiebreakers.
• Top-seeded Maria Sharapova earned her first title in 10 months with a 6-2, 3-6, 6-0 victory over Patty Schnyder in the final Acura Classic tournament.
Sharapova used sharp groundstrokes in the first and third sets to capture her first championship since winning a WTA title at Linz, Austria, in October.