It's been a season full of special teams disasters for the 49ers, with the missed field goals, poor return coverage and cornucopia of miscues. Even Tom Brady, who was on the call for Fox, got so fed up with the Niners' mistakes that he wondered why the team even bothered making returns at all.

Kyle Shanahan revealed the cause for his noteworthy outburst during the second quarter of San Francisco's 38-10 loss to the Green Bay Packers on Sunday at Lambeau Field.

Sunday at Lambeau Field. Here’s a look at how the previous six quarterbacks fared in their first starts with the 49ers under Shanahan: Brian Hoyer, Sept. 10, 2017: In Shanahan’s first game as 49ers head coach,