Chicago erased a 17-point second-half deficit and stunned the Chiefs 29-27 with a walk-off touchdown from backup quarterback Tyson Bagent to rookie Jahdae Walker. But the way the first-team unit looked left Johnson frustrated.

Johnson has been frustrated on and off in training camp about "sloppy" football and had believed the Bears were turning a corner until an ugly performance Friday against the Chiefs.

Johnson was not happy with his first-team offense following Friday night's preseason game against the Kansas City Chiefs.

Chicago Bears backup quarterback Tyson Bagent closed out a 29-27 win against the Kansas City Chiefs with a walk-off game-winning touchdown that erased a 17-point deficit on Friday. After Bagent signed a two-year, $10 million extension with the Bears, he led them to a thrilling victory in Chicago's preseason finale.

Two days after signing a two-year, $10 million extension, Chicago quarterback Tyson Bagent capped a monster night by throwing the game-winning touchdown pass with three seconds left as the visiting Bears beat the Kansas City Chiefs 29-27 on Friday night.

Chicago Bears QB Tyson Bagent delivered a heartfelt message about what it meant to sign a $10 million contract.