2009 Major League Lacrosse season
sports season

The 2009 Major League Lacrosse season was the ninth season of the league. The season began on May 15, 2009 and concluded with the championship game on August 23, 2009.
Milestones & events
Rule changes
Major League Lacrosse announced some major rule changes in the off-season. The league will introduce a fourth long–stickman to play. For the first eight seasons the league operated, each team could only field three long–stick defenders on the field at a time. This rule was unique from the traditional men's field lacrosse rules played in high schools and colleges. The league will maintain the two–point goal and shot clock that differentiates Major League Lacrosse rules from high school and college lacrosse. In addition, the league announced that each team would be permitted to have one additional roster position to a total of nineteen players.
Team movement
The Washington Bayhawks will move from the Washington D.C. area to Annapolis, Maryland. The Bayhawks have signed a three–year contract with the Naval Academy to play their home games at the Navy–Marine Corps Memorial Stadium.
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