Mansally scored in the 21st minute on a pass from Adam Cristman but had to leave the game shortly thereafter with a wound above his eye inflicted in a collision with a Bermuda player along the touchline. Mansally was taken to a local hospital for a precautionary screening.
Cristman added his second goal in as many contests to complete the scoring.
Mansally and Sainey Nyassi, who also started against Bermuda, signed with the Revs last summer after being discovered playing for Gambia at the 2007 Under-20 World Cup in Canada. It was Mansally whose goal on a free kick gave the Baby Scorpions a 2-1 win over Portugal in one of the upsets of the tournament.
Gambia is perhaps the most underdeveloped soccer nation in West Africa. Its first breakthrough came when it qualified for the U-17 World Cup in Peru, where Mansally and Nyassi also played.
The Revs now return home for a week of training before heading to Cancun, Mexico, where they will play the Pioneros de Cancun (third division) and 2007 Apertura champion Atlante, which moved to Cancun last summer.