Major Series Lacrosse

Major Series Lacrosse (MSL) is a Senior A box lacrosse league based out of Ontario, Canada sanctioned by the Ontario Lacrosse Association.

Most of the players in the league play or have played in the National Lacrosse League. Each year, the playoff teams battle for the right to compete against the Western Lacrosse Association champion for the Mann Cup.

The championship is hosted alternately between Ontario and British Columbia every year.