Kevin-Prince Boateng scored a hat-trick within 18 minutes of coming on as a halftime substitute as AC Milan bounced back from being 3-0 behind to win 4-3 at Lecce in an astonishing Serie A match on Sunday. An 82nd minute header from Colombian defender Mario Yepes completed the fightback for the defending champions who had been three goals adrift after 37 minutes following a shambolic first-half display. Uruguayans Guillermo Giacomazzi and Carlos Grossmuller had scored to put Lecce in command with Massimo Oddo converting a penalty in between against his former Milan team mates. Milan—who started the weekend in 13th place—moved to 11 points, two behind overnight leaders Juventus, while Lecce slumped to their fourth straight home defeat this season and remained on four points.