[a] A competitor since childhood, Reis is a European Open, Brazilian Nationals, Pan and World Champion in the juvenile and lower belt divisions, completing an IBJJF Grand Slam in 2019.

[7] At the 2022 ADCC World Championship on 17–18 September, Reis defeated Ashley Williams on points in the opening round and his teammate Fabricio Andrey by decision in the quarter-final on the first day.

[12] Reis competed in the IBJJF World Championship 2023 on 3 and 4 June 2023 and won a bronze medal in the light-featherweight division.

[13] Reis then competed against Jack Sear in a superfight at Honor Submission Challenge Italy on 1 July 2023.

[20] Reis was booked to defend his Who's Number One featherweight title for the first time against Diego 'Pato' Oliveira at WNO 21: Ryan vs Barbosa on 30 November 2023.

[22] Reis was slated to represent Team Modolfo in the under 65kg division at AIGA Champions League Final 2023 on 13 and 14 December.

[29] He beat Huaiqing Xu, Fabricio Andrey, Josh Cisneros, and Diego ‘Pato’ Oliveira to win the division.