On 2 May 2015, Vidal scored the only goal of a 1–0 win at Sampdoria, confirming "La Vecchia Signora" as Serie A champions for the fourth consecutive season. On 20 May, he appeared in Juventus' 2–1 win over Lazio in the 2015 Coppa Italia final, as Juventus captured a domestic double and their tenth Coppa Italia title. On 6 June 2015, Vidal started for Juventus in the 2015 Champions League final as "La Vecchia Signora" was defeated 3–1 by Barcelona at Berlin's Olympiastadion.