The Expos franchises existence began with two teams in the summer of 2020. While the pandemic kept many teams down, the Expos Baseball Club won two championships during the inaugural season of the franchise. The first title came by the hands of the East Boston Expos of the Yawkey League. The second was a championship for the Merrimack Valley Expos of the Commonwealth Amateur baseball league.

The 2021 season was even busier. 

The Merrimack Valley Expos of the Commonwealth Amateur Baseball League brought in their third title. It wasn’t an easy road. They finished the rain shortened season in 6th place, which would lead them on a collision course to have to take down the #3, #2 and #1 seeds in consecutive order to capture the CABL title. With the odds stacked against them, the team stepped up and in swift action swept the Norfolk Mariners in the quarterfinals, followed by a 3-game semifinals sweep of the Weymouth Cubs. The only one standing in the way of back-to-back championships would be the Malden Marlins, a rematch of the 2020 CABL championship series. After leading the Best of 5 series 2-0, the Expos squandered the next two opportunities to win the championship, forcing a Game 5 winner take all matchup. The Expos battled to the end, winning Game 5 by a score of 3-2, and winning the series 3-2. Back-to-back champions!

The East Boston Expos of the Yawkey Baseball League finished in 4th place on the regular season. They proceeded to force a do-or-die Game 5 in the semifinals of the playoffs, and a trip to the finals in back-to-back seasons was on the line. The East Boston Expos would come up just shy of reaching the finals after losing the deciding Game 5 to the AL Thomas Athletics, who went on to win the YBL Championship.

he Middlesex Expos joined the Intercity baseball League, giving the Club three teams in the franchise. In their expansion season in the league, they finished in 2nd place during the regular season, which was followed by a run to the ICL championship. The Middlesex Expos would fell short, losing in the championship series to the Lexington Blue Sox.

As the Expos head into 2022, the three Expos franchises will set out to secure three different amateur baseball league championships – including a potential “3-peat” in the Commonwealth Amateur Baseball League.