- 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 Sun Oct 17 13:54:13 2021#219Guilherme Santos is the 219th ranked of 899 active United States Pro Featherweights.
updated Mon Oct 18 00:29:58 2021#48Guilherme Santos is the 48th ranked of 184 active US Midwest Pro Featherweights.
updated Tue Oct 19 01:28:29 2021#265Guilherme Santos is the 265th ranked of 757 active Brazil Pro Featherweights.
updated Wed Oct 20 12:20:53 2021#16Guilherme Santos is the 16th ranked of 48 active KS/Missouri Pro Featherweights.