FC Seoul's 2009 AFC Champions League campaign began with a 2–1 win over Indonesian side Sriwijaya 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.