Later that month, Maicon scored his first Champions League goal against reigning champions Barcelona when Inter registered a famous victory over the Catalans. He reportedly knocked out a tooth after he collided with Lionel Messi. Having overtaken Roma at the summit of the Serie A and winning the league title, Inter went on to eliminate Barcelona from the Champions League in the semi-finals, with Maicon earning praise. On 22 May 2010, after beating Roma in the Coppa Italia final weeks earlier, Inter won the Champions League, thus obtaining the treble, with a 2–0 victory over Bayern Munich in the final at the Santiago Bernabéu Stadium, Madrid. He was named the 2009–10 UEFA Club Defender of the Year and his performances earned him a nomination for the Ballon d'Or trophy as Europe's top player.