In Mercato Sports v Everton, the English High Court found that two parties were bound by an implied horizontal contract containing an arbitration clause. Accordingly, it granted a stay of proceedings under section 9 of the Arbitration Act 1996 (‘S9 AA 1996’). In this case, a football agent (the Claimant) sought payment for bringing a player to the attention of Everton (the Defendant) and by doing so, it enabled them to sign the player. While Claimant and Defendant had no direct contractual relationship, the Court established that both were bound by the Football Association’s Rules (‘FA Rules’), in particular by the arbitration agreement therein. While the Court emphasized that such arrangements would not always automatically lead to an implied horizontal contract, the parties’ dealings in this case did lead to an implied contractual relationship, governed by the FA Rules.