In 2021-2022, the former Box Sector Chair for Lacrosse Canada held consultations with the two Senior A and three Junior A leagues in Canada to craft new rules. The purpose was to better align with the rules of the National Lacrosse League. The decision was not to adopt the entire NLL rule book, but to choose some of their better rules that make the game faster, safer, and more exciting. This included items like 8 seconds to get across half, no over and back at centre, new face-off alignments, penalties for offensive too many men, three person officiating crews, and several others. These rules were then implemented for Senior A/Junior A for the 2022 season.

Since that time we have had requests to standardize the rules across the RMLL. This was due for several reasons. First, people liked the new rules. Second, the referees wanted a consistent rule book across all major lacrosse divisions. Third, some teams wanted the same rules because of player mobility between Junior B and Junior A. In fact, both Alberta Series Lacrosse (SrB) and JrB Tier 1 adopted the three person officiating crews, but not the new rules, in 2022.

At the RMLL planning meetings in November 2023, there was discussion about standardizing the rules. Teams debated it and there was no consensus. Some teams were in favour, but others were opposed. Much of the disagreement was about whether the rules would be used in Lacrosse Canada national championships. The RMLL Executive made numerous inquiries, but could not get a full confirmation. Finally, with the season approaching and the RMLL officials “uber” clinic quickly arriving, the RMLL Executive decided, based on the best interest of major lacrosse for all teams/divisions, that we would use a standardized set of rules in the entire RMLL. We firmly believe that this will eventually be the norm across Canada.

The full set of 2024 RMLL Rules can be found here
The casebook for RMLL officials, which incorporates situations flowing from the 2024 can be found here
The new floor markings, which have been distributed to the arenas, can be found here



February 23, 2024 – The Chaos Junior Lacrosse Club and its franchise Southern Alberta Chaos are excited to announce that they will be hosting the MacDonald Cup this year. The 2024 event will be hosted in the Centennial Regional Arena in Brooks, Alberta August 7th -11th.

After a hiatus of 27 years, the Port Coquitlam Saints, B.C. successfully hosted the 2023 tournament where the Cranbrook Blackwolves became the first champions of the rechristened MacDonald Cup since 1995. The eight-team event was highly enjoyed by athletes, volunteers, and the numerous lacrosse fans that attended.

“The Chaos organization is relatively new, formed on an emergent basis in 2022 to preserve playing opportunities for Southern Alberta athletes by the collaboration of the Lacrosse
Associations from Brooks, Lethbridge, and Taber. A true regional team, the players, coaches, and volunteers come from all over the Southern Alberta region, from south of High River to the US border and east / west from BC to Saskatchewan. That diversity is the cornerstone of Chaos culture; members come together bonded by their passion for and commitment to lacrosse. The Club’s 2024 pre-season planning included an intent to play in the MacDonald  up—now Chaos contacts, colleagues and friends throughout Southern Alberta have formed an army of volunteers and supporters dedicated to a successful MacDonald Cup played at a premiere venue from the Centennial Regional Arena in Brooks, Alberta . We look forward to hosting teams from our neighboring provinces and creating a great lacrosse experience!” – Mike Medhurst (Club President)

The Western Canadian Junior B Invitational is named the MacDonald Cup after long time BC Junior B Commissioner Fraser MacDonald, who spent over 3 decades as a volunteer and advocate for Junior B Lacrosse in British Columbia. The renamed Invitational, MacDonald Cup will bring together 8 top teams from BC, Alberta, Saskatchewan, and Manitoba from any Junior B2 leagues not competing for the National Founders Cup Championship.

The Championships had their origins in 1968 when Vancouver Cablevision won the event. Like the original Founders Cup, this current intention of the event will initially be an invitational tournament with the long-term objective of becoming a true Western Canadian Championship event again between the top teams from each league competing by 2026 -27. Teams interested in competing in this limited entry tournament here will be required to fill out an application form and submit a deposit. There will be 8 teams with two pools of 4, with all teams getting 5 games. Teams being considered to attend are from British Columbia, Alberta, Saskatchewan, and Manitoba.

For more information, please contact the organizing committee at:

More information will be updated throughout the year on our website: