- Given Name: 謙吾, Kengo
- Pro MMA Record: 8-13-3, 1 NC (Win-Loss-Draw)
- Nickname: N/A
- Current Streak: 1 Win
- Age: 43 | Date of Birth: 1976.01.31
- Last Fight: February 17, 2007 in GCM
- Weight Class: | Last Weigh-In: N/A
- Affiliation: Team Oyama
- Height: 6'4" (194cm) | Reach: N/A
- Career Disclosed Earnings: $0 USD
- Born: Japan
- Fighting out of: Saitama, Japan
Regional Rankings Rankings FAQ
Kengo Watanabe is ineligible for regional rankings due to inactivity.
Fighters must have at least one completed MMA bout in the past two years to be ranked.