Adam Gase: Bears' Khalil Mack 'playing at a different level than anyone I've seen'

Adam Gase has faced Khalil Mack four times — twice as the Denver Broncos' offensive coordinator, once in his lone season with the Bears and once last season, his second as head coach of the Miami Dolphins.

Gase went 3-1 against Mack's Raiders, with the lone loss coming last season. Mack has one sack and one forced fumble in the four meetings.

So, as Gase prepares to face Mack for the fifth time overall and first since the reigning Defensive Player of the Month joined the Bears, his high praise for Chicago's new prize defender certainly carries weight.

One day after Gase conceded, "you're not going to slow him down," the coach's compliments of Mack continued on a teleconference with Bears…