Translate:
Many former MLB big leaguers over the years (and still today) have played in the MSBL league across the country. But that was not always the case. In 1989 when MSBL (Men's Senior Baseball League) was just getting started in its second year of existence, former and retired major leaguers looked to the Senior Professional Baseball League. However the league folded on December 26, 1990 and ever since MSBL has replaced the void for ex-MLB senior baseball players.
AUG 28, 2019 SPORTS ILLUSTRATED ARTICLE:
"MLB had an unofficial Old-Timers' league that was a disaster. Thirty years ago, former big leaguers took to the diamond once again, donning caps and uniforms of never-before-seen teams as the Senior Professional Baseball Association tried to establish itself as a haven for pro ballplayers not yet ready to call it quits. Things didn't quite go according to plan..."