As cannabis legalization expands across North America and beyond, professional sports leagues have been forced to rethink their stance on player use. While the NFL has eased up on punishment, leagues like the Canadian Football League (CFL) and rugby organizations under World Rugby have taken distinctly different approaches, reflecting their legal and cultural environments.

NFL: Slow but Measured Reform

The NFL’s relationship with cannabis remains cautious despite significant policy updates. In 2024, the league and the NFL Players Association raised the THC threshold for a positive test from 150 ng/mL to 350 ng/mL and reduced penalties for violations. Players now face fines rather than suspensions, and testing occurs just once per year during training camp.

Still, cannabis is technically banned under the league’s Substance Abuse Policy. The NFL’s conservative stance stems largely from federal law and sponsor sensitivities. Rather than endorsing use, the league continues to fund research on cannabis and CBD for pain relief and neuroprotection.

This approach highlights the league’s balancing act—acknowledging evolving science and player wellness while protecting its image and financial interests.

CFL: Legalization and Leniency

In contrast, the CFL takes a far more relaxed approach. Following Canada’s nationwide cannabis legalization in 2018, the league chose not to test players for marijuana at all. CFL Commissioner Randy Ambrosie confirmed that the league focuses on performance-enhancing drugs, not recreational substances.

Players are free to use cannabis legally off the field, much like alcohol or other consumer products. However, they can still face discipline if they appear impaired during team activities or violate the league’s conduct policy.

The CFL’s approach mirrors Canada’s broader acceptance of cannabis and reflects a focus on player responsibility rather than punitive enforcement. It also aligns with growing medical evidence that cannabinoids can aid recovery, reduce inflammation, and improve sleep quality—key concerns for high-impact athletes.

Rugby: Compliance and Caution

Rugby leagues fall somewhere between the NFL’s caution and the CFL’s leniency. Governed by World Rugby and the World Anti-Doping Agency (WADA), cannabis (excluding CBD) remains prohibited in competition but not during the off-season. The current threshold for a positive test is 150 ng/mL, allowing for trace amounts from prior use.

Rugby’s global structure means rules are enforced across national unions, such as the NRL in Australia and the RFU in the U.K. Sanctions for positive tests can be reduced if the player proves no intent to enhance performance. CBD products are permitted under WADA, though players are cautioned about THC contamination. (World Rugby)

While the sport must adhere to global doping standards, its handling of cannabis has softened. Many cases now emphasize education and rehabilitation over punishment—acknowledging cannabis as a wellness issue rather than a performance threat.

Different Rules, Shared Momentum

The contrast between leagues highlights how law and culture shape cannabis policy:

• NFL: Slowly reforming, focused on research and liability.
• CFL: Aligned with legalization, leaving use to player discretion.
• Rugby: Bound by WADA rules but moving toward flexibility and harm reduction.

In essence, the NFL continues to evolve within a restrictive legal framework, the CFL fully embraces a post-legalization reality, and rugby seeks balance between compliance and compassion. Each league’s approach reflects its jurisdiction’s attitude toward cannabis—proof that the game’s rules off the field are changing just as quickly as those on it.