There are a shocking amount of former MLB players still doing what they can to stay relevant in the game of baseball. From former All-Stars to World Series champs to Opening Day starting pitchers, there is an extensive list of them still out there.
Today, we will take a look at players that played the 2021 season in the Atlantic League of Professional Baseball, the Frontier League, and the American Association of Professional Baseball … all MLB Partner Leagues.
The MLB Partner Leagues consist of 45 teams and have no direct affiliation with any individual MLB clubs. The teams still collaborate with MLB in the promoting of baseball in North America, though.