The lone holdover from Reed Wallace's team is none other than one-time WEC veteran Chuck "The Reverend" Grigsby, who competed for USA East during two of its three regular season meets. After suffering a decision loss on Aug. 16 in Holland vs. Benelux heavyweight Jessie Gibbs, the 6'6'' Grigsby will return to his natural weight class of light heavyweight for the Sept. 26 matchup vs. USA West.

Joining Grigsby on the USA East squad will be former International Fight League standout welterweight Delson Heleno. Heleno, 15-5, went 6-4 during his ten fight IFL stint. During his nine-year fighting career, the Rio de Janeiro native holds notable wins over former veteran of The Ultimate Fighter Mike Dolce, current UFC welterweight Jake Ellenberger, and former UFC veteran Gideon Ray.

Heleno will be matched up against fellow Brazilian and one-time Affliction veteran Fabio "Negao" Nascimento during the best-of-five elimination series against USA West. M-1 officials believe that the Heleno vs. Negao matchup could contend prove to be one of the best fights in the history of the M-1 Challenge.

In addition to Negao and Grigsby, Wallace's USA East team will be filled out by lightweight Ivan "Batman" Jorge (9-0), middleweight Gerson "Indio" Dos Santos Cordeiro (4-7-1), and heavyweight Luis Pedro Ribeiro (5-0).

The additions of Jorge and Ribeiro to the USA East roster are welcome ones, as both native Brazilians are currently undefeated and are considered two of the top rising prospects from Brazil. In order for USA East to have a chance to make it to the M-1 Challenge finals, they will have to be on top of their game against a USA West team that won a tough Group B with a 3-0 team record and an individual record of 13-2.

Jorge will put his undefeated record on the line against USA West lightweight Gregg Dalton, a California-based fight prospect with a 7-2 record who trains out of Thomas Denny's Team Wildman in Victorville, California. Meanwhile, Ribeiro will be facing the toughest test of his career when he takes on USA West heavyweight Shane Del Rosario, a blue chip prospect who has wowed the hardcore MMA community with a perfect 7-0 record that includes all of his wins coming inside the distance.