Following the name of the champion(s): Indicates the number of times the competitor has held that title at that point.
[...]
Indicates a gap in the listing where title changes are not known.
<
Title was held or changed hands no later than this. In these cases, it is known that a competitor held the title at a certain time but not when he/she won it.
@
Order uncertain. Different titleholders may be known for the same year, for example, but it is not known who held the title before whom.
#
Unofficial or disputable claims. These are usually matches that certainly took place, but where there is doubt that the competitor shown should be recognized as a true title holder. These listings are also italicized.
* Bolded letters in the competitor's name, if any, indicate the surname/family name.
Nakamura Kaneo
1924-04-26
Tōkyō
Defeats Ōzeki Chōji to be recognized as the first champion by Nippon Kentō Club; moves to USA in 26-09.
Hara Yasu
1927-06-04
Tōkyō
Defeats Suzuki Hiroyuki in the final of Dai Nippon Kentōkai's All Japan championship; also defeats Kinouchi Kiyota in the final of Meiji Shrine championship on 27-11-03 in Tōkyō; also defeats Kid Tōgō on 28-11-04 in Tōkyō to be recognized by Teiken.
Hashimoto Shuku
1929-11-03
Tōkyō
Defeats Hara in the final of the Meiji Shrine championship; wins the featherweight title on 30-04-19.
Kojima Shōji
1930-04-19
Tōkyō
Defeats Yasu Hara in the final of Dai Nippon Kentōkai's All Japan championship.
???
1930-05
Tōkyō
Wins Dai Nippon Kentōkai's All Japan championship.
Hattori Hideaki and Matsuoka Fukuo
1933-05-23
Fight to a draw for the match to determine the Japanese respresentitative for the Japan-vs-France competitions and recognized as co-champions.
[…]
Ōtsu Shōichi
1934-12-25
Tōkyō
Defeats Makino Takeshi in the final of the All Japan Championships to become the 9th champion.
Gen Umio
1936-01-05
Tōkyō
Ōtsu Shōichi [2]
1936-09-14
Tōkyō
11th champion.
[…]
Sōda Motomitsu
1942-09-09
Tōkyō
Defeats Horiguchi Motoharu to win the Red Fighting Flag to become the 12th champion.
