The San Francisco 49ers found out the hard way in Week 18 what it was like not to get their offense going against a resolute defense in the Seattle Seahawks, losing a painful bout to decide the NFC's No. 1 playoff seed by a score of 13-3.
Additionally, the Niners found out how a strong defense in tandem with an effective rushing attack can wholly thwart an opponent's chances to come back.
Perhaps head coach Kyle Shanahan can take those lessons into San Francisco's Wild Card matchup on the road against the Philadelphia Eagles, and there's one particular element he can aim to exploit to help the 49ers advance to the divisional round.