In 2010 Frank Castro was diagnosed with stage four terminal cancer from the colon to the liver and was told he had a 6% chance of living through the next six months. “I figuratively spit in the eye of the doctor and said I wasn’t ready to roll over quite yet,” said Castro.

HERE IS THE UPDATED DIVISION LISTING AS OF JULY 28TH! An unprecedented 440 teams are expected at this year's MSBL World Series in Arizona! Click on the logo to be directed to our website World Series page see the teams and their divisions thus far.

They say great things can be found in small packages.  Welcome to Rhode Island, home of the Rhode Island MSBL.  Established in 1989, this league could boast more talent per square foot than any other state in the country.

"I became President of the League in 2021, as our past president, Eddie Byrd took over as the treasurer of our league and as the manager of the White Sox.  Our League owes a tremendous debt to Glenn Mayfield and Eddie for getting the league going and keeping it running for all these years," Paul Tingley, League President

The HVMSBL consists of two divisions. 35+ Division (allowing three players 30 or older) which plays predominantly weeknights and our 45+ Division (allowing three players 40 or older) which plays mostly Saturday mornings. We work with an affiliate organization for those ballplayers not currently 30 or older (18+).

The Vermont Senior Baseball League began in 1984 and then came under the MSBL umbrella in 1991.  The league’s current president is Billy Waller.  We reached out to league secretary Reid Crosby for some background on this successful league and received a wonderful summary of past and current league activities.

The INMBL is located in the beautiful Inland Northwest with teams in Spokane, Spokane Valley, Post Falls, Coeur d’Alene, and Priest River Idaho. They currently have 200+ ballplayers that play summer and fall seasons from May to October and play on local high schools and occasionally play at Avista Stadium, home of the Spokane Indians Single A professional baseball team.

47-year old Eddie Sapp is the president of the Tucson MSBL due to the recent passing of longtime league president Kirk Jacobs.  Founded in 1999, the league is currently divided into 18+, 25+, 35+ and 45+ divisions, 33 teams, and over 500 players.