Anthony Mundine wins in six after Shane Mosley forced to call for doctor Boxer Anthony Mundine reflects on his victory over legendary American counterpart Sugar Shane Mosley after the latter withdraw from the fight after thew sixth round with back spasms. Anthony Mundine stopped Shane Mosley by TKO when the American could not start the seventh round, forced to retire with back spasms. Anthony Mundine lands a left on Shane Mosley during the WBA International super welterweight title bout. ANTHONY Mundine last night won the vacant WBA International super welterweight title with a sixth-round TKO over Shane Mosley at Allphones Arena. The American star suffered a back spasm and the fight was called off by refreeze Raul Caiz following a recommendation from doctor Lou Lewis. Mundine was leading 58-56 on two cards and 60-55 on the third. Despite the less than ideal finish, it was one of the best performances of Mundine's 13-year professional career. It dropped Mosley's record to 47-9-1, the 42-year-old saying he would decide after he returned to the US whether he would retire. Mundine improved to 45-5, with his management team now hopeful the win could give the 10th-ranked WBA contender a fight against Floyd Mayweather. Meanwhile, Blake Ferguson might want to return to rugby league as soon as possible after suffering a four-round unanimous points loss to fellow professional boxing debutant Blake Turner on the undercard to last night's fight. Ferguson finished 39-37 behind on all three cards and was outworked by the smaller man form Goulburn. The NSW State of Origin back was sacked by Canberra in September after failing to front the board following breaches of the club's code of conduct. His league career remains in limbo pending the findings of the NRL integrity unit. Ferguson was thrown out of the NSW Blues Origin squad following a drinking session with another former Raiders star, Josh Dugan, who was at Allphones Arena on Wednesday along with several other league stars, especially from Cronulla, one of his rumoured suitors. Ferguson started quietly and took the odd blow in the opening minute, but connected with a series of punches in the final 30 seconds to probably steal the first round. Turner was the aggressor for most of the second round, with Ferguson not throwing many punches. Turner shaded him in the third and definitely took the final round, landing several right hands on a fatiguing Ferguson, who showed he had a decent chin. "It was an awesome experience, I really enjoyed it," Ferguson said. I want to get back in the ring with him. Ferguson, who weighed in at just over 100kg, had Tony Mundine and another former league star turned boxer, Solomon Haumono, in his corner.