Canadian Premier League Pioneers FIFA's Daylight Offside Rule

The debate around offside calls in football has taken a dramatic turn north of the border. As the Canadian Premier League kicked off its 2025 campaign this past Saturday, it became the first professional circuit worldwide to implement FIFA's experimental "daylight" offside regulation — and soccer's international governing body is keeping close tabs on the results.

The principle behind the change is straightforward: a player is deemed offside only when clear separation — literal daylight — exists between them and the second-last defender. If they're level or positioned behind that defender? They're onside. Gone are the hair-splitting decisions based on millimetres. No more pausing replays to examine the position of a player's shoulder.

Wenger's vision finds a home

Arsène Wenger has championed this modification for several years. Now serving as FIFA's chief of global football development, he's secured his first real-world testing environment — labeling the Canadian trial "an important pilot." Major European competitions have declined to experiment with the change, making the CPL's adoption either admirably bold or a calculated move to gain international attention. Likely a combination of both, and there's nothing wrong with that.

Diego Mejia, head coach of Atletico Ottawa, offered a thoughtful perspective: "I see this as an opportunity to grow as a coach. It's going to give me more tools for the future." His response reflects tactical awareness. The regulation alters defensive strategy — maintaining a high defensive line now requires being unquestionably ahead, not just marginally so. Expect some managers to adopt deeper formations and absorb offensive pressure rather than risk tight positional calls.

Saturday's season opener between defending champions Ottawa and Forge FC also marked the league's first use of video assistance, employing FIFA's Football Video Support framework — a streamlined alternative to comprehensive VAR. The initial challenge required over five minutes to adjudicate, examining two potential offside infractions, a foul during buildup play, and a goalkeeper-striker collision that resulted in a penalty decision. The challenge was ultimately denied.

Early results show promise and problems

A subsequent offside review using the daylight standard didn't interrupt play whatsoever. That's precisely the intended outcome. Whether this efficiency continues throughout an entire season — and whether forwards begin exploiting the rule by shadowing defenders — remains an open question.

Skeptics rightfully point out that risk-averse centre-backs might emerge as unexpected beneficiaries, dropping deeper to prevent obvious gaps behind their position. This defensive adjustment could reduce attacking opportunities in a competition not particularly recognized for high-scoring matches.

What Canada has accomplished, deliberately or otherwise, is providing international football with a functioning test case that England's Premier League, Spain's La Liga, and Italy's Serie A have been unwilling to undertake. Wenger described it as important. That initial five-minute VAR examination indicated the adjustment period will be challenging.