It is now official: the Canadian Premier League (CPL) will become the first professional competition in the world to test football’s new offside rule, widely known as the “Wenger Law,” from the start of the 2026 season on April 4.
The groundbreaking trial, approved by FIFA and IFAB, will see the Canadian top league serve as the first major testing ground for the proposed reform championed by Arsène Wenger, FIFA’s Chief of Global Football Development.
The proposed rule is designed to encourage attacking football by shifting the advantage back toward forwards in close offside situations.
🚨🚨 OFFICIAL | CANADA will test the new “WENGER LAW” offside rule from April 4 in the CANADIAN PREMIER LEAGUE, in agreement with FIFA.
The rule favours attackers and will only penalise offside when the entire playable part of the player’s body (excluding hands/arms) is clearly… pic.twitter.com/kKMteLq9hb— Football Scope (@FootScopeX) March 31, 2026
What is the “Wenger Law”?
At the heart of the reform is what has become known as the “daylight principle.”
Under the new interpretation, an attacking player will not be flagged offside if there is any overlap, even the slightest, with the second-last defender.
In other words, an offside offence will only be called when the attacker’s entire body, using only the parts with which a goal can legally be scored, has completely moved beyond the last defender.
This effectively puts an end to the controversial millimetre offside decisions that have often dominated the VAR era, where goals were ruled out for a shoulder, knee, or even the tip of a boot being marginally ahead.
As long as any playable part of the attacker’s body remains level with the defender, the player will be considered onside.
CPL as FIFA’s testing laboratory
FIFA and IFAB will use the CPL as an exclusive live testing laboratory to evaluate how the new rule affects the game, particularly in terms of attacking play, defensive tactics, and overall entertainment value.
The trial will to provide important data on whether the law leads to more goals, more attacking runs, and fewer frustrating stoppages.
Alongside the new offside rule, the league will also introduce Football Video Support (FVS), a lighter review system than traditional VAR.
Unlike the full VAR model, FVS allows coaches a limited number of challenges per match to review major incidents such as goals, penalties, and red cards.
If the trial in Canada is successful, FIFA is reportedly considering a global implementation for the 2027/28 season. This could be one of the most significant law changes in modern football.
The move could dramatically alter attacking strategies across the sport and potentially reshape how defensive lines are coached at the highest level.