Driven by Khalil Mack, Bears' defense starting to look special

GLENDALE, Ariz. -- The Chicago Bears felt they had a top-10 defense last season.

This year, the bar is set much higher -- and rightfully so.

The driving force behind the Bears’ 2-1 start is the defense, which forced four more turnovers (on four consecutive series in the second half) in Chicago’s 16-14 come-from-behind win over the Arizona Cardinals.

“For our defense, three weeks in a row now they’ve done special things,” coach Matt Nagy said on Sunday.

Chicago is used to watching the Bears play a “special” brand of defense. From Dick Butkus to the ’85 Bears to Lovie Smith’s Cover 2 that featured Hall of Famer Brian Urlacher, Lance Briggs and Charles Tillman (to name a few), the Bears have often…