NEW YORK: Gennady Golovkin earned a unanimous decision over Daniel Jacobs on Saturday to retain his middleweight titles, but boxing’s knockout king failed to extend his 23-fight KO streak. Golovkin was forced to go 12 rounds for the first time as a professional as Jacobs gave him all he could handle in front of a boisterous crowd at Madison Square Garden. Golovkin retained his WBC and WBO belts and also claimed Jacobs’ WBA title as two of boxing’s pre-eminent punchers put on an entertaining show against the best opponents of their respective careers. Cancer survivor Jacobs was an underdog going into the fight but he used his 10-pound weight and reach to his advantage and possibly provided the blueprint for Canelo Alvarez to use against the 35-year-old Kazakh in a future title fight. Golovkin, who improved to 37-0, won on all the judges’ scorecards but the fight was close throughout.He floored Jacobs early in the fourth round with two successive overhand rights to record the only knockdown of the fight. Golovkin had won 33 of his previous 36 fights by knockout as his 23 fight knockout streak, which dated back to 2008, came to a halt. He has a 92 percent knockout rate, the best ratio of any middleweight in boxing history. Golovkin’s IBF title was not on the line because Jacobs declined to attend the Saturday morning weigh in. Jacobs needed to be within 10 pounds of Friday’s official weigh-in weight or lose the chance to fight for the IBF title. The 30-year-old Jacobs decided the extra weight in the ring was more important than fighting for all of Golovkin’s titles and the gamble almost paid off. He dropped to 32-2, with 29 knockouts.Cancer survivor: Jacobs is nicknamed “Miracle Man” after his career was almost ended in 2011 because of osteosarcoma, a rare form of bone cancer. He made a full recovery but spent 19 months out of the sport while battling and recovering from cancer. On the undercard, Thailand’s Srisaket Sor Rungvisai captured the WBC super flyweight title Saturday with a stunning majority decision over Roman Gonzalez. The former star Muay Thai fighter, who once worked as garbage man to help finance his early boxing career, continued his amazing boxing run by handing Gonzalez the first loss of his career. Srisaket has now won 41 or his last 42 fights as he improves to 42-4 overall with one drawn and 38 knockouts. Nicaragua’s Gonzalez, who goes by the nickname “Chocolatito”, is considered one of the best pound-for-pound fighters in the world and was a heavy favourite going into the 12-round fight. He suffered a couple of cuts over his right eye which bleed profusely throughout much of the fight and hampered his vision. Gonzalez, who dropped to 46-1, immediately left the ring without making any comments.Former WBC champion Srisaket’s only loss since 2010 came three years ago when he fell to Mexico’s Carlos Cuadras. In the final round, the Thai southpaw was booed loudly because he spent much of it either running away or clutching and grabbing Gonzalez in the centre of the ring. Gonzalez, in his 16th world title fight, became a world champion in his fourth weight division in September by taking a unanimous decision victory over Cuadras. Gonzalez lost Saturday’s fight despite landing 441 punches compared to just 284 punches landed for Srisaket.