Fantasy Football: 5 Things We Learned in Week 9

In his return to the field, Dalvin Cook flashed his elite top-end speed, demonstrating that he's ready to be a big factor down the stretch. What else can we learn from Week 9?

Wow, what an exciting finish to another great week of football.

The New Orleans Saints took down the last undefeated team in the league, and Tom Brady and the New England Patriots bested Aaron Rodgers and the Green Bay Packers on Sunday night. These were two of the most anticipated games of the year, and they both occurred on the same weekend. It certainly made for some high-quality entertainment.

But as fantasy football managers, it's our job to learn something from the action. We witnessed the emergence of two new players -- and one not-so-new one -- as well as the return of one of the most electric backs in football. We even got to see what happens when teams trade away their top receivers.

So without further ado, here are five things we learned in Week 9.