Week 4 of the Fantasy football season brought a ton of new surprises, disappointments and questions that still need to be answered.

But before you try and separate fact from fiction after just the fourth week of the NFL season, you need to see what SportsLine Fantasy analyst Davis Mattek has to say.

Mattek has been working in the Fantasy industry since his college days and has contributed to virtually every meaningful publication and website in the industry. He's hosted podcasts with over two million listens and been nominated for several FSWA awards, including Football Writer and Best Podcast.

Now, he's breaking down the action from Week 4 to see what has changed in the Fantasy landscape.

One thing we learned: Corey Davis is a back-end WR1.

"I have been hesitant to go all in on Davis as receiving a true WR1 workload, but at this point he has three of four games with at least eight targets, and has 40 total targets through four games," Mattek said. "His weighted opportunity rating is second in the NFL behind only Julio Jones, who remains the second or third best WR to own in Fantasy. This Titans offense is not Rams-esque as we imagined, but with so many offenses spreading their targets out and not having a true top dog, Davis' week-to-week floor at the WR position is worth owning and trading for. He has also been underpriced for his projected workload on all the major daily fantasy sites."

Mattek has also identified a player who has emerged as a Fantasy starter, and who it is may surprise you.

So what did we learn after Week 4 of the NFL season? ... Join SportsLine now to see Davis Mattek's analysis of some of the biggest Week 4 storylines, all from an experienced Fantasy expert who can give you a huge edge against your competition.