Seventh-ranked challenger Jayson Vayson of the Philippines, uncorking combination blows, stopped Ryuya Yamanaka of Shinsei Boxing Gym in the second round to wrest the World Boxing Organization’s Asia-Pacific light flyweight title in Kobe on Dec. 17.

  The technical knockout of the scheduled 12-rounder at Kobe Portopier Hotel came 1 minute and 14 seconds into the round when Vayson connected with a right uppercut by taking advantage of Yamanaka’s left jab, sending Yamanaka to the canvas.

While Yamanaka、a former WBO world minimumweight champion, attempted to get up, he was wobbling right and left, which prompted the referee to call off the fight.

  With the victory, the 25-year-old Vayson improved his record to 11 wins, including six KOs, against a loss and a draw. For his part, the 28-year-old Yamanaka failed in his first defense of the title he captured last May. He fell to a 19-4 win-loss tally with six KOs.

  Meanwhile, top-ranked challenger Toshiki Kawamitsu of Misako Boxing Gym stopped Toshimasa Ouchi of Himeji-Kinoshita Boxing Gym in the second round to win the Japanese light flyweight title held at the same venue.

  The technical knockout of the scheduled 10-rounder came 1 minute into the round when Kawamitsu landed a devastating right hook to the chin, sending Ouchi crashing down hard.

  Though Ouchi struggled to his feet to beat the referee’s count, Kawamitsu swarmed all over Ouchi by landing various blows, which caused the referee to stop the fight.

  With the victory, the 28-year-old Kawamitsu improved his record to nine wins, including five KOs, against a loss. For his part, Ouchi, who failed in his first defense of the title he captured last August, impaired to a 23-13-3 win-loss-draw tally with nine KOs.

  Champion Yuna Hara of Shinsei Boxing Gym needed only 69 seconds to stop 11^th-ranked Taison Mukaiyama of Happy Box Gym to retain his Japanese super featherweight crown in a scheduled 10-rounder held as the day’s main event.

  It was Hara’s first successful defense of the title he captured from Kosuke Saka of Nakazato Boxing Gym last April.

  While Mukaiyama tried to befuddle Hara by fighting left-handed, Hara dropped Mukaiyama with a pair of straight rights. While Mukaiyama managed to stand up to beat the referee’s count, Hara wasted no time in sending his staggerd opponent to the canvas with a straight right, which prompted the referee to end the fight without bothering to count.

  With the victory, the 29-year-old Hara upped his record to 14 wins, eight by KO, against two losses and a draw. The 25-year-old Mukaiyama dropped to a 7-5 win-loss record with four KOs.