On 29 October, Koscielny received praise for his solid performance in Arsenal's 5–3 away win against Chelsea. He scored his first goal of the season on 2 January 2012 in a 2–1 away defeat against Fulham. He scored his first Champions League goal against A.C. Milan in a 3–0 victory in the round of 16 second leg. On 13 May 2012, he scored the winning goal in a 3–2 victory against West Bromwich Albion to ensure that Arsenal finished third in the Premier League. He was voted as the team's fourth most important player by the fans in Arsenal's Player of the Season poll for his performances throughout the 2011–12 season.