AAA Feb. 20, 2013 4:59 PM ET AC Milan stuns Barcelona 2-0 in Champions League By DANIELLA MATARBy DANIELLA MATAR, Associated Press AC Milan midfielder Sulley Muntari, of Ghana, celebrates after scoring his side's second goal during the Champions League round of 16, first leg soccer match between AC Milan and Barcelona, at the San Siro stadium in Milan, Wednesday, Feb. 20, 2013. AC Milan midfielder Sulley Muntari, of Ghana, left, scores his side's scond goal during the Champions League round of 16, first leg soccer match between AC Milan and Barcelona, at the San Siro stadium in Milan, Wednesday, Feb. 20, 2013. AC Milan's Kevin-Prince Boateng celebrates after scoring during the Champions League round of 16, first leg soccer match against FC Barcelona at the San Siro stadium in Milan, Italy, Wednesday, Feb. 20, 2013. AC Milan's Kevin-Prince Boateng, left, is hugged by teammate Stephan El Shaarawy, after scoring during their Champions League round of 16, first leg soccer match against Barcelona, at the San Siro stadium in Milan, Italy, Wednesday, Feb. 20, 2013. Barcelona forward Lionel Messi, of Argentina, left, is challenged by AC Milan midfielder Riccardo Montolivo during their Champions League round of 16, first leg soccer match, at the San Siro stadium in Milan, Italy, Wednesday, Feb. 20, 2013. MILAN (AP) - Kevin-Prince Boateng and Sulley Muntari scored second-half goals, leading AC Milan to a 2-0 upset of Barcelona on Wednesday night in the first leg of their Champions League second-round matchup. Boateng put the seven-time champions ahead in the 57th minute after Cristian Zapata appeared to handle Riccardo Montolivo's pass in the buildup. Muntari scored in the 81st to help Milan to its first win over Barcelona in eight games. Barcelona, which has won three of the last seven European titles, had not lost by two goals since a 3-1 defeat to Real Betis in the Copa del Rey on Jan. 19, 2011. The second leg of the total-goals series will be in Spain on March 12.