Missouri Mastodons

Jefferson County, MO  – The Jefferson County Lacrosse Association is pleased to announce that we have teamed up with Ultimate Lacrosse  to sponsor and form the Missouri Mastodons Semi- Pro Box Lacrosse team.

The Mastodons are comprised of Missouri’s best Amateur Box Lacrosse talent, including players from both Missouri IBLA teams (St. Louis Centurions, River City Blue Cats). The Mastodons will return to the Great Plains Box Lacrosse League in 2021 after falling to the Milwaukee Muskies in the 2020 GPBLL Harvest Classic Cup. The Mastodons will also continue to compete in top level tournaments across the country.

St. Louis Centurions goaltender and JCLA founder Rob Nash will serve as General Manager of the team. Former MLL/NLL player Mike McLellan has been appointed as Head Coach. River City goaltender and Ultimate Lacrosse co-owner Mike Silva and St. Louis Centurion and JCLA Vice-President Ian Brosch will make up the rest of the Mastodon Front Office.

Be sure to follow the Mastodons on all Social Media platforms to stay up to date with all the latest news!


The 2021 player combine/draft will take place this Summer and will be announced when a date is secured. Interested players should fill out the Draft Me questionnaire here


JCLAGPBLLUltimate Lacrosse