The Chicago Bears responded to the first in-season coach firing in franchise history with a dud.

Instead of getting an emotional bump from changing coaches, the Bears went into free fall against the San Francisco 49ers with a non-competitive performance that led to their most lopsided loss of the season with a 38-13 loss on Sunday.

Eberflus was fired on Nov. 29 after a string of bad late-game decisions contributed to a six-game losing streak, capped by a Thanksgiving loss at Detroit when the Bears ran out of time for a potential game-tying field goal even though they had a timeout remaining.

There were no critical late-game mistakes for the Bears (4-9) against the 49ers (6-7) as this game was mostly decided by halftime.

Chicago was outgained 319-4 in the first half for the ninth-largest discrepancy since 1991, managed only one first down and trailed 24-0 at the break.

The Bears allowed the San Francisco offense to move down the field with little resistance with the Niners scoring three TDs and one field goal on their first five possessions.