Brian Norman Jr Victorious In Tokyo Massacre

© Mark J. Rebilas-Imagn ImagesBrian Norman Jr. left the Tokyo crowd stunned and speechless after scoring a devastating knockout over hometown hero Jin Sasaki. Norman, 24, knocked Sasaki on his back for over a minute after connecting with a crushing counter left hook in Round 5 to retain his WBO welterweight title Thursday morning at the Ota City General Gymnasium in Tokyo.

Brian Norman (27-0, 21 KOs), knocked Sasaki down twice in the opening round. The young American champion dropped Sasaki with a counter left hook inside the first 40 seconds. From that point you knew that the hometown hero was in for a long night in the ring.

Sasaki (19-1-1, 17 KOs) shortly tried to counter and was…