Japan's Ryo Miyazaki pounded out a split decision victory over Pornsawan Porpramook of Thailand to win the vacant World Boxing Association (WBA) minimumweight title yesterday. Two judges scored the bout 116-112 and 116-111 in favor of Miyazaki, while the third marked it 114-113 for Pornsawan. Miyazaki, 24, who is ranked WBA minimumweight No. 2, improved his record to 18 wins, including 10 KOs and three draws, while Pornsawan, ranked fourth, has now 27 wins, including 17 KOs, against five defeats and a draw.