Rock League Baseball

One of the Nation’s Largest Adult Baseball Leagues

Rock League Baseball is part of the MSBL and is one of the largest adult men's baseball leagues in the United States, representing over 55 teams and over 900 players in the greater Milwaukee area. Our age divisions are 18+, 28+. 35+, 45, 55+ and 62+. League play starts late April and goes through August/September.