1970-08-23 Hiroshi Kobayashi w pts 15 Antonio Amaya, Korakuen Hall, Tokyo, Japan - WBA
1970-08-23 Hiroshi Kobayashi w pts 15 Antonio Amaya, Korakuen Hall, Tokyo, Japan - WBA. Referee: Nicholas Pope. Scorecards: 72-71, 72-69, 73-71. Making good use of his longer reach and speedy footwork, the challenger made life difficult for Kobayashi (128¾) just as he had done in their earlier contest. By the sixth round it seemed as though Amaya (129½) was in front as Kobayashi, now cut over the left eye, missed repeatedly with wild swings. Although Kobayashi came back strongly in the eighth, the rest of the action seemed to be controlled by Amaya. However, it was apparent that many of his punches were not landing with the knuckle part of the glove, something that ultimately cost him the fight.
Despite being rated as a featherweight by The Ring magazine, the hard-punching Ricardo Arredondo was selected as Kobayashi’s next challenger. With only four losses in 59 contests - against Clemente Sanchez, Raul Cruz, Jose Luis Lopez and Alfredo Marcano - he was on a run of ten-inside-the-distance victories, having wins over Enrique Garcia, Marcano, Victor Echegaray and Sammy Goss.