Founded in 1987, the first men's team plays in the first division of the Baseball-Bundesliga since 1995 and has won the German championship five times in 2008, 2010, 2011, 2012 and 2013.

The full club consists of 11 teams: As part of a fund raising effort, Legionäre began selling stock in the club at the price of €100 a share, equating to €1 of the team value.

The shares are not marketed as high-return investments but contributions that give the supporter a presence in the organization.

[1] In the 2010 season, Legionäre led the Southern Division in most offensive and defensive categories, posting a combined .367 batting average and hitting 21 home runs as a team, while the club's pitching staff posted a 2.21 ERA.

Buchbinder Legionäre Regensburg was one of the three teams to start in the inaugural season of the Euro League Baseball.