Revenge is one of the more motivating factors during a clash of titans.
Two of the marquee teams in the NFC will go at it Sunday afternoon at creaky old Candlestick Park when the Green Bay Packers come calling on the San Francisco 49ers.
Everybody knows what happened the last time the two teams met Jan. 12, 2013.
In a divisional playoff game, the 49ers, thanks to a phenomenal game from quarterback Colin Kaepernick, dusted the Packers, embarrassed them really, to the tune of 45-31, a final score that actually flattered the Pack.
Kaepernick ran wild that day gaining 181 yards, the high point in his 10-game run that has brought him all the acclaim that one can muster.
The Packers are the team that was stung that day and they had the rest of the winter, the spring and summer to hear about how they were pushed up and down the field.