The team was founded when the American Indoor Football Association expelled the Baltimore Blackbirds for negotiating with another league.

On March 21, 2010, the Mariners became the first team in AIFA history to earn a shutout win, as they won over the Fayetteville Guard 59–0.

[5] Baltimore went on to win the AIFA Championship and complete their undefeated season with a 57–42 victory on July 25, 2010, over the Western Conference champions, the Wyoming Cavalry.

^ - indicates playoff game The coach of the undefeated 2010 Mariners, Chris Simpson, would move to the Richmond Raiders for the 2011 season.

^ - indicates playoff game Note: The finish, wins, losses, and ties columns list regular season results and exclude any postseason play.