Kyle Shanahan has seen enough.
The 49ers special teams units have ranked near the bottom of the league over the last two seasons. As opponents routinely picked up big yardage on kickoff returns. Meanwhile, seeing San Francisco return a kickoff out to the 25 was cause for a standing ovation.
And who can forget the mistakes from the San Francisco punt return unit? After their defense opened the game by forcing Seattle to a three and out, this unit allowed Travis Homer to take a fake punt 73 yards for a touchdown. Early in the fourth quarter of their NFC Wildcard contest against Dallas, this unit was at it again, allowing the Cowboys to convert for a first down on a fake punt which led to a field goal.