CARSON, Calif. -- Keith Thurman had an unenviable act to follow when Lucas Matthysse and John Molina Jr. put on a bloody 11-round slugfest right before he stepped in the same ring with Julio Diaz. Although Thurman couldnt match Matthysses pyrotechnics, the rising welterweight still managed a big finish. Thurman remained unbeaten Saturday night, stopping Diaz after three rounds when Diazs corner threw in the towel due to an injured rib. Thurman (23-0, 21 KOs), nicknamed "One-Time" for his one-punch knockout power, retained his WBA interim welterweight title. He floored Diaz in the second round before delivering the body shot that led Diaz to quit on his stool on a chilly night before the usual energized crowd at the outdoor ring south of Los Angeles. Although he had a short night, Thurman still demonstrated his formidable skill and power in his seventh fight in less than two years. "Hes a warrior, but he just couldnt take the punishment," Thurman said about Diaz. "No one knows the power of One-Time until they step in the ring with One-Time. We did the work in the gym. How did you think I was able to look this good?" A left to the temple dropped Diaz, although he stayed on his unsteady feet for a moment before taking a knee and getting up to beat the count. Thurman remembered the punch that evidently injured Diazs rib, but thought Diaz (40-10-1) had partially blocked it. "We were able to put that pain and that hurt on him like were supposed to," Thurman said. The main event was an anticlimax after a tenacious performance by Matthysse (35-3, 33 KOs), who overcame two early knockdowns and stopped Molina early in the 11th round of the Argentine 140-pound stars dynamite return to the ring. Matthysse knocked down the bleeding Molina in each of the final three rounds, culminating in a decisive combination. Matthysse hadnt fought since injuring his eye and losing a decision to 140-pound champion Danny Garcia last September, but he was right back in destructive form. "It did take me a few rounds to get going, but I was able to take control of the fight," Matthysse said. "The knockdowns threw me off a little, but I was able to get my punches in." That defeat interrupted the rapid rise of the hard-punching Argentine known as "The Machine," and he returned with what many expected to be a simple fight against Molina (27-4), a Los Angeles-area fighter who infamously got knocked out in the first round of a title shot in 2012. But Molina showed he was no pushover from the opening round, knocking back Matthysse with a big right hand. Another chopping right out of a clinch in the second round sent Matthysse to his knees on just his second career knockdown. Although Matthysse controlled long stretches of the bout with his jab and power, he went down again late in the fifth after winning much of the round, dropping to his knees on a punch to the top of his head. Matthysse immediately indicated the punch was illegal in the back of his head, but referee Pat Russell ruled it a knockdown. "I thought I was going to get him out of there early, but he got it together," Molina said. "Theres a reason hes the No. 1 guy in the division. I took his shot all the way through, and I didnt feel it until the end." Despite a cut near his left eye, Matthysse kept using his jab and power against Molina, who had a large cut on the left side of his head. Matthysse then knocked down Molina late in the eighth round with a left hand and a possible push before punishing him throughout the ninth. Matthysse dropped Molina again in the 10th round with a combination on the ropes. Molina crumpled into the corner on a relentless barrage of punches early in the 11th, and Matthysse leaped on the ropes to celebrate. Omar Figueroa Jr. (23-0-1) also retained his WBC lightweight title with a dull split-decision victory over Jerry Belmontes. U.S. Olympians Joseph Diaz Jr. and Terrell Gausha both remained unbeaten on the undercard. LeGarrette Blount Jersey . Philippe Desrosiers stopped 42 shots through overtime and three more in the shootout to pick up his third shutout of the season for Rimouski (31-15-7). Zachary Fucale made 28 saves for Halifax (34-17-3) in the loss. Sylvester Williams Jersey . A question that was repeatedly posed last season, and the season before that and in the 2011 campaign before that. http://www.lionsfanspro.com/Black-Levine-Toilolo-Lions-Jersey.html?cat=953 . Off-season additions Jermain Defoe and Michael Bradley did not train with the club today, prompting Nelsen to declare its too early to tell if either will be ready for Saturday. DaShawn Hand Jersey . TSN 1290s coverage begins with Hustler & Lawless at 3pm. Rick Ralph hosts the Official Jets Pre-game Show at 5pm. Tracy Walker Jersey . The commissioners office said Friday that Sears tested positive for metabolites of Methandienone. Sears will be 23 in March. He signed with the Braves in June 2013 out of Arizona Christian, an NAIA school, and is on the roster of the rookie-level Gulf Coast League Braves.LIVERPOOL, England -- Malky Mackay insists he will not resign as Cardiff manager amid a power struggle with owner Vincent Tan. Mackays position has come under fresh doubt this week after the Malaysian owner sent him an email requesting him to stand down or be sacked. Speaking publicly for the first time since then after a 3-1 loss at Liverpool, Mackay told broadcaster BT Sport: "I wont be walking away.dddddddddddd Thats the first thing. Im proud to be the manager of Cardiff City ... I couldnt look at myself resigning." At Anfield on Saturday, Cardiff fans showed their support for Mackay, chanting his name and holding up "Tan out" banners. Mackay led Cardiff into the Premier League for the first time last season. The Welsh club is four points above the drop zone. 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