By David P. Greisman & Alexey Sukachev

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Manchester, Phones 4U Arena - Scott Quigg made a triumphant defense of his World Boxing Association "regular" world title at 122 pounds, putting Diego Silva down twice and scoring a second-round knockout.

The end of the bout came 1 minute and 41 seconds into that round.

The first knockdown came about a minute into the second round, when Quigg threw a pair of right uppercuts that sent Silva down. Silva rose at seven, and Quigg kept him on the ropes, figuratively and literally. The end came on a right hand that landed near Silva's ear, stiffening his legs and dropping him. The referee waved it off.

Quigg, 25, was coming off an October draw with Yoandris Salinas. This victory brought his record to 27-0-2 (20 KOs). The WBA's "super" world title at junior featherweight is held by Guillermo Rigondeaux, while the WBA's "interim" world title at 122 is held by Nehomar Cermeno.

Cermeno is Quigg's mandatory. Promoter Eddie Hearn said that he'd also like a unification bout between Quigg and International Boxing Federation titleholder Kiko Martinez. Hearn said a fight between Quigg and fellow undefeated British 122-pounder Carl Frampton isn't likely.

Silva, a 30-year-old from Argentina, is now 29-3-4 (15 KOs).

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Former middleweight title challenger Andy Lee made quick work of the game but outmatched Ferenc Hafner, scoring a second-round technical knockout.

Hafner came out immediately seeking to throw heavy shots. Yet he wasn't able to handle Lee's power. Lee put Hafner on the canvas less than halfway into the first with a left hand to the body.

In the second, Lee scored another knockdown with a left cross that landed as a counter to Hafner's right hook. As with before, Hafner got up quickly. He'd return to the mat again, though, this time from a right hook to the head. Hafner easily beat the count, but the referee had seen enough.

The time of the stoppage was 1:19.

Lee, 29, took this bout on short notice after another bout was canceled. The victory brings his record to 31-2 with 22 KOs and has now won three straight since his stoppage loss last year to Julio Cesar Chavez Jr.

Hafner, 37, is now 21-5 with 12 KOs.

British lightweight Anthony Crolla scored a technical knockout victory when Stephen Foster's corner halted the bout after the sixth round.

The ring announcer said Foster had an injury. It should also be noted that Foster was a late replacement for Martin Gethin, who pulled out of the Crolla bout eight days beforehand. Foster had been training to face Michael Katsidis in Australia in December on a card that wound up being canceled.

Crolla dedicated plenty of attention to Foster's body. In the third round, he began to move in and out more, a strategic switch in style that helped him avoid more of Foster's shots after he'd finished sending out his own.

Foster seemed to be tiring, throwing less each round, and then he came out with a burst of energy in the sixth. It wouldn't do him any good; Crolla held up well to his attacks, and Crolla continued to land as well. The body shots at times had Foster wincing, and Foster also was bleeding from his nose.

Crolla, 27, improves to 27-4-1 (10 KOs). In his other fights in 2013, he fought to a draw with Derry Matthews in March and then took a majority decision over Gavin Rees in June.

Foster, 33, falls to 31-5-1 (18 KOs).

British lightweight prospect Luke Campbell was forced to go the distance for the first time in his pro career, taking a 40-36 referee's decision over durable designated opponent Chuck Jones.

Campbell, who captured gold as a bantamweight in the 2012 Olympics, has fought in the 135-pound division since turning pro this past July. He scored a pair of opening-round knockouts in his first two bouts, then won with a fifth-round technical knockout in his third fight.

Jones had lost far more than he'd won, coming into this bout with a record of 4-12-2, yet only one of those losses had come via knockout. He took a good clean left hand as well as a right hook from the southpaw Campbell in the first round, and also withstood the barrage of combinations that Campbell unleashed in the second.

In the third, Jones tried to toss out single right hooks toward the tail hand of Campbell's combinations, but didn't score any damage. The fight ended one round later.

Campbell, 26, is now 4-0 with 3 knockouts. Jones, 23, falls to 4-13-2 with no knockouts.

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On his worst day Stephen Smith has something to turn things around - a cracking hit. He showed one three months ago against British super featherweight champion Gary Buckland. He delivered it once again tonight against hard-nosed Argentinean veteran Sergi Manuel Medina to knock him out at 2:39 of the eighth round. WBO #13 Smith, 28, is now the WBC Silver international 130lb champion.

It was a relatively hard night for one of four Smith siblings. Medina, 31, was on a mission - to restore his reputation after the first-round blowout from Juanma Lopez in 2008 for the WBO super bantamweight title, a fight, which was marred of arguably false allegations from Medina, who insisted he was threatened to death to find an early place on the canvas. Medina was bullrushing Smith, trying to deliver big thudding blows. And he was successful in the first round, hitting Smith at times. The Brit answred with body shots. In the second and in the third, he did better, overcoming Medina with his precision.

The Argentinean import did his share of damage in the fourth and landed some quality body shots to get the fifth stanza. Smith came back in the sixth to trouble Medina - also to the body. Medina was also on the receiving end of an accidental headbutt at the end of the stanza, which was followed by a bizarre ending, which saw the Argentinean continuously dropping his mouthpiece. In round seven, referee Massimo Barrovecchio deducted a point from the Latino fighter - also for a headbutt.

The end came late into the eighth, following an unexpected left hook to the body by Smith. Stephen is now 18-1, 11 KOs, while Medina slips to 39-7-1, 21 KOs. He is 6-6-1 in the last five years.

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Recently deposed IBF bantamweight champion of the world Jamie McDonnell (22-2-1, 10 KOs) had little problem, getting the better of former flyweight world title challenger Bernard Inom (22-4-1, 10 KOs) and stopping him on his feet in round seven. The British boxer had to lose his newly acquired red belt due to promotional issues a month ago without making even a single defense.

McDonnell, 27, dominated the action from the very first minute of the opening round. He used his significant height advantage (6 inches higher than the Frenchman), and he was fresher of the two. At 40 and being dwarfed, Inom, who was making his bantamweight debut, had the only goal - to survive. It was hard to accomplish the task, Bernard was eating multiple body shots from various angles and was stalked around the ring by the Brit's hard jabs.

McDonnell incresed his domination after the midst of the fight. Inom was firing back less and less with each fought round, covering much and having no chances whatsoever. After several stinging shots the referee stepped in to wave the fight off at 1:47 of the seventh stanza. There were no knockdowns but Inom was fighting back not.

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Steven Gerrard's cousin Rocky Fielding (17-0, 10 KOs) looked like the Thing in a quick blowout of a late sub Luke Blackledge (14-2-2, 5 KOs). Fielding knocked out Blackledge col at 2:32 of the very first round with a massive left hook to retain his Commonwealth super middleweight title for the very first time.

Blackledge came in as a substitute for the Guyanese Lennox Allen. He started confidently but Fielding slipped his punches and answered hard in return. Midst into the third minute Blackledge tried to get Fielding at the ropes, was stepped over and ate a big (but short) left hook he never saw. Team Fielding targets Paul Smith next in a huge domestic showdown.

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