New Japan Pro Wrestling
International Wrestling Grand Prix
U-30 Open-Weight Title Holders
Hiroshi Tanahashi
April 23rd, 2003
Tanahashi became the first champion by defeating Shinya Makabe in the tournament finals.
Shinsuke Nakamura
January 5th, 2005
Nakamura vacated the championship on May 1st, 2005. The U-30 Openweight Title was then retired.
Hiroshi Tanahashi(2nd)
June 18th, 2005
Tanahashi earned the restored championship by defeating Toru Yano in the tournament finals. The belt was vacated on June 7th, 2006 and was again retired.