FC. In the next three games, FC Seoul obtained only one point in the matches against Gamba Osaka and Shandong Luneng. However, Seoul then defeated the title holders Gamba Osaka and qualified to the round of 16 after Sriwijaya's unexpected victory over Shandong Luneng. On June 24, 2009, FC Seoul beat Kashima Antlers 5–4 after penalties after a 0–0 draw in the round of 16 clash and advanced to the quarter-finals, but were beaten 4–3 on aggregate by Qatari club Umm Salal. FC Seoul's appearance in the AFC Champions League was its first since the Asian Club Championship era. The Şenol Güneş era ended on November 25, 2009, with the manager returning to Trabzonspor. K League and League Cup "double" (2010) FC Seoul appointed Nelo Vingada as manager on December 14, 2009. Vingada won the K League and League Cup with FC Seoul. FC Seoul had 20 wins, 2 draws, and 6 defeats in the domestic league under Vingada's management. FC Seoul recorded an attendance of 60,747 against Seongnam Ilhwa on May 5, 2010 at Seoul World Cup Stadium, which is the highest single-game attendance record in South Korean professional sports history. FC Seoul also recorded the single season (League, K League Championship, and League Cup) highest total attendance record – 546,397, and the single regular & post season (League and K League Championship) highest average attendance record of 32,576. On August 25, 2010, FC Seoul beat Jeonbuk Hyundai Motors 3–0 to become the 2010 League Cup winners. FC Seoul were also crowned K League champions by defeating Jeju United 4–3 on aggregate in the K League Championship final, thus achieving their first "double" in the club's history. The crowd of 56,769 in the second leg also set the record of the highest attendance in K League Championship history. On December 13, 2010, FC Seoul wanted to extend Vingada's one-year contract but FC Seoul and Vingada could not come to an agreement over the salary conditions, resulting in Vingada returning to Portugal. AFC Champions League final and the sixth K League title (2011–2016) FC Seoul's former player Choi Yong-soo was hired to manage the club in 2012, after previously serving as the assistant manager and caretaker for the club in 2011. In 2013, FC Seoul lost the AFC Champions League Final on away goals rule against Chinese side Guangzhou Evergrande. The AFC Champions League campaign has earned Choi Yong-soo the