The Interstate Box Lacrosse Association is the nation's largest senior box lacrosse league. Formed in 2017, the IBLA is comprised of regional divisions around the country where the winners of each region attend the IBLA Nationals every year. Starting in 2020, RBLL- Michigan is a new region consisting of teams in Detroit and Grand Rapids. 

 

In 2019 the IBLA partnered with the National Lacrosse League to provide an opportunity for players, coaches, and officials to make the jump to the NLL.

 

The 2020 RBLL- Michigan season begins in June with the season running through the summer on weekends in a best of seven format.

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