He was officially announced three days later, but he will join the club after playing 2015 FIFA Club World Cup. Atlético won its second-straight Liga match after defeating Sevilla at the Sánchez Pizjuán 3–0, with goals from Koke, Gabi and Jackson Martínez. On 31 August, the last day of the summer transfer window, after a transfer request, Raúl García signed a four-year contract with Athletic Bilbao. On 12 September, Atlético fell to Barcelona 1–2 at the Vicente Calderón, with Fernando Torres scoring for Atlético. On 15 September, Atlético played its first match in the Champions League group stage, winning 2–0 over Galatasaray, with two goals from Antoine Griezmann. With goals in the second-half from Ángel Correa and Fernando Torres, Atlético has achieved an important victory by closing a week against Eibar. Three days later, Atlético beat Getafe through two Griezmann goals at the beginning and of the match. In its next match, however, Atlético suffered its second loss in La Liga at the hands of Villarreal, with a goal by Léo Baptistão deciding the match. In its second match in the Champions League, Atlético lost 1–2 at home to Benfica; the only goal scored from the home team came from Ángel Correa. In the first Madrid Derby of the season, on 4 October at the Vicente Calderón, Karim Benzema gave Real Madrid the lead, only for Luciano Vietto to later equalize, salvaged a 1–1 draw for Atlético. On 16 October, Atlético was drawn in the round of 32 of the 2015–16 Copa del Rey against Reus. On 18 October, Antoine Griezmann and Yannick Carrasco both scored to secure a 2–0 victory over Real Sociedad. On 21 October, Atlético played its third match of the Champions League group stage, defeating Astana 4–0. Saúl, Jackson Martínez, Óliver and a Denys Dedechko own goal secured all three points. On 25 October, Jackson Martínez and Yannick Carrasco both scored to ensure a 2–1 win over Valencia. In the tenth round of league, on 30 October, Atlético played Deportivo.