Bears linebacker Brian Urlacher left the team's loss to the Packers on Sunday night with a wrist injury. Urlacher dislocated his wrist in the third quarter and there is no timetable for his return, according to coach Lovie Smith. The Chicago Tribune reported late Sunday night that Urlacher will have surgery on the wrist once the team returns to Chicago. "It's always tough to have your leader go down," linebacker Lance Briggs said, according to the newspaper. "He knows the defense better than anybody and he communicates everything to everyone else."