Arredondo turned pro in 1968 and in 1971 challenged Hiroshi Kobayashi for the WBA super featherweight title, but lost a decision.
He also fought in numerous non-title matches in between his defenses, including a bout against WBA super featherweight champion, Hiroshi Kobayashi, where Saijo lost by decision over 10 rounds.
Hiroshi Takahashi | Hiroshi Fujioka | Kobayashi Issa | Kenta Kobayashi | Takeru Kobayashi | Hiroshi Hamaya | Hiroshi Takahashi (manga artist) | Hiroshi Sugimoto | Hiroshi Kawashima | Kobayashi Maru | Kiyoshi Kobayashi | Ken-Ichiro Kobayashi | Hiroshi Kamayatsu | Yumiko Kobayashi | Takao Kobayashi | Satoru Kobayashi | Hiroshi Yamauchi | Hiroshi Watanabe | Hiroshi Senju | Hiroshi "Monsieur" Kamayatsu | Hiroshi Kyono | Hiroshi Kobayashi | Abdullah Kobayashi | Yutaka Kobayashi (businessman) | Yutaka Kobayashi (announcer) | Yutaka Kobayashi | Shinji Kobayashi | Sachiko Kobayashi | Royal Kobayashi | Mao Kobayashi |