Mandžukić then added four more goals in five more Bundesliga matches, taking his tally to nine goals in 11 matches in the German top tier. After the Bundesliga winter break, Mandžukić continued with his goal scoring activity, netting three more goals in first two games, against Greuther Fürth and Stuttgart. He scored another brace against 1. FSV Mainz 05. He finished his first Bundesliga season with Bayern as the club's top goalscorer, netting a total of 15 goals in 24 matches and having a major impact in winning the Bundesliga title. He scored his first Champions League goal of the season in the Round of 16 match against Arsenal. He netted another one in the quarter-final match against Juventus in Turin, giving Bayern the 0–1 away lead. On 25 May, Bayern faced Borussia Dortmund in the 2013 UEFA Champions League Final and Mandžukić scored the first goal of the match, giving Bayern a 1–0 lead in 60th minute. Bayern went on to win the match 2–1 after a late goal from Arjen Robben. With this goal, Mandžukić became the first Croat to score in a Champions League final game and it capped a highly successful first season for him in Munich, as the club completed a treble-winning season, claiming the Bundesliga, Champions League, and DFB-Pokal, as well as the German Supercup at the start of the campaign.