Not a single Bears defender comes close to bringing Lions RB Jahvid Best down on this play. The linebackers, Lance Briggs and Brian Urlacher weren’t in their correct gaps.

It’s a rare mistake by the Bears, who are one of the most sound defenses year in and year out. This a play Bears players and fans never want to see.

Lets just hope they can try to fix these mistakes in practice this week because the season is unraveling quickly.

Jake Perper is the owner and head writer for Bearsbacker.com. He is also the Chicago Bears writer for NFLTouchdown.com. Follow him on Twitter, @Bearsbacker for up to the minute news about the Bears.