- Given Name: Guilherme Costa Dos Santos
- Pro MMA Record: 8-4-0 (Win-Loss-Draw)
- Nickname: The Prodigy
- Current Streak: 2 Losses
- Age: 1997-07-07 | Date of Birth: 1997.07.07
- Last Fight: January 15, 2021 in LFA
- Weight Class: Featherweight | Last Weigh-In: 147.6 lbs
- Affiliation: American Top Team
- Height: 5'10" (178cm) | Reach: 70.0" (178cm)
- Career Disclosed Earnings: $0 USD
- Born: Manaus, Amazonas, Brazil
- Fighting out of: Coconut Creek, Florida
- College: N/A
- Foundation Style: Brazilian Jiu-Jitsu
- Head Coach: Ocimar Costa
- Other Coaches: N/A
Regional Rankings Rankings FAQ
updated Mon Jun 27 04:34:44 2022#56Guilherme Santos is the 56th ranked of 196 active US Midwest Pro Featherweights.
updated Mon Jun 27 04:09:52 2022#279Guilherme Santos is the 279th ranked of 936 active United States Pro Featherweights.
updated Sun Jun 26 23:24:51 2022#18Guilherme Santos is the 18th ranked of 50 active KS/Missouri Pro Featherweights.
updated Tue Jun 28 06:39:45 2022#311Guilherme Santos is the 311th ranked of 909 active Brazil Pro Featherweights.