In the biggest Japanese boxing match of this generation, Naoya Inoue beat Junto Nakatani on Saturday, handing his compatriot the first loss of his professional career. Inoue secured a unanimous-decision victory at the Tokyo Dome , retaining the undisputed super-bantamweight titles and preserving his unbeaten record. Both Inoue, 33, and Nakatani, 28, entered the super-fight with perfect records and as multi-weight world champions , but it was the “Monster” who solidified his already-remarkable legacy with another victory. Naoya Inoue remained unbeaten as he overcame Junto Nakatani (AP) Inoue (33-0, 27 KOs) earned scorecards of 116-112, 115-113, 116-112, extending his current title reign, which has followed an undisputed run at bantamweight, and previous title wins at light-flyweight and super-flyweight. Meanwhile, Nakatani won gold at flyweight and super-flyweight before becoming unified bantamweight champion, a reign that gave way to his super-bantamweight debut in December.…