Bears RB David Montgomery thriving under new play-caller

David Montgomery runs against the Texans on Sunday.As David Montgomery zipped through a wide-open hole and sprinted down the sideline on the Bears’ first offensive play Sunday, he reached 20.33 mph. Per NFL Next Gen Stats, it was the fastest he’s ever run on an NFL field. More importantly, he reached the end zone, capping an 80-yard run.

Two weeks earlier, he didn’t make it that far. On the second Bears offensive play of the Packers game, he took a handoff up the middle for 57 yards, only to be tackled at the 8. The Bears lost a yard on the next play, threw two incompletions and were forced to kick a field goal. By halftime, the Bears trailed by three scores.

“He does that in practice every…