Anti-doping – Appeal against decision of Sports Tribunal to Court of Arbitration for Sport (CAS) – substance of abuse – T admitted to use of cannabis in-competition – Tribunal majority concluded eight month sanction having regard to a proportionality argument and substantial delay (for backdating) – CAS allowed appeal against Tribunal decision – CAS found that, while proportionality arguments exist, the circumstances of the case did not violate the principles of proportionality – CAS agreed with Tribunal’s assessment that there was substantial delay not attributable to T (for backdating) – Tribunal’s decision on sanction set aside – two year sanction imposed