Agüero was once again a regular goalscorer for Atlético in the 2008–09 season, continuing to establish a lethal partnership with Uruguayan striker Diego Forlán, also a former Independiente player. On 16 September, he scored his first Champions League goals in a 3–0 away win at PSV, helping Atlético eventually reach the last 16 of the competition. In March 2009, the duo of Forlán and Agüero scored a brace each in a 4–3 win over league leaders Barcelona, the latter scoring the winning goal in the final minutes of the match. With the help of more vital goals in a formidable end of the season run-in from his team, Agüero finished in the top ten contenders for the Pichichi Trophy, which was won by his teammate Forlán. Atlético finished fourth in the league, qualifying for the following season's Champions League. Despite not being as prolific in front of goal, Agüero had another good season in 2009–10, and was praised for his influential performances as Atlético enjoyed their most successful season in over a decade. On 3 November 2009, he scored twice against Chelsea during a 2–2 draw in the Champions League at the Vicente Calderón. Atlético were knocked out of the competition, but went on to reach the final of the 2009–10 UEFA Europa League, where Agüero assisted both goals in a 2–1 extra time win against English club Fulham. He also helped Atlético reach the final of the Copa del Rey, although this time they were not victorious, losing to Sevilla in the Camp Nou on 19 May. On 27 August 2010, Atlético Madrid captured the UEFA Super Cup by beating favorites Internazionale 2–0. Agüero provided the assist for José Antonio Reyes' opening goal and then secured the win by scoring the second. On 4 January 2011, Atlético Madrid confirmed via their official website that Agüero had signed a new contract with the club, keeping him at the Vicente Calderón until 2014. The following day, he was named as the new vice-captain of Atlético, along with strike partner Diego Forlán. The 2010–11 season was arguably Agüero's most successful for Atlético, as he scored 20 league goals for the first time in his career. Between March and May 2011, he went on a run of seven consecutive goalscoring appearances, a feat that no other player in Europe could match during the season.