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SONNY Bill Williams says winning the New Zealand heavyweight boxing title was as good as anything he achieved during his stellar crosscode rugby career.The 36-year-old won World Cups with the All Blacks in 2011 and 2015 and helped the Kiwis reach the 2013 final of the rugby league equivalent.He retired in March and has since returned to boxing to add to the seven fights he won between 2009-2015.“It was awesome,” he told BBC Radio 5 Live’s Adrian Chiles.“Winning the New Zealand heavyweight title belt was amazing. I didn’t...