 On 1 October 2015, Ruiz scored his first goal for Sporting against Beşiktaş in the group stage of the UEFA Europa League.His first goal in the Primeira Liga came in a 3–0 Lisbon derby defeat of Benfica at the Estádio da Luz on 25 October.In another derby, on 5 March 2016, he missed an open goal against Benfica, who eventually won the match 1–0 at Estádio José Alvalade, knocking out Sporting to second place in the league.