One of the most exciting parts of Fantasy Football is hitting on a sleeper that no one is talking about that saves your season. Everyone knows what DeAndre Hopkins, Michael Thomas, and Julio Jones are going to do, but what about the guys that not everyone knows about that you can draft in one of the last rounds or maybe even pick up in free agency?

Let's breakdown five wide receivers that could be key to you winning your Fantasy Football league.

5. Hakeem Butler, Arizona Cardinals

Hakeem Butler was a fourth-round pick this season out of Iowa State for the Arizona Cardinals and this might be more of a sleeper for a keeper league that could pay off a few years down the road. Even so, this is a guy that should see the field some this year, and could break off a few long ones.

Butler isn't a great route runner, but what he can do is run past guys in the secondary and catch bombs. As a junior at Iowa State, Butler hauled in 60 passes for 1,318 yards and nine touchdowns. All he needs is a couple of long catches for touchdowns to make him relevant for Fantasy Football this year.

4. Cordarrelle Patterson, Chicago Bears

Cordarrelle Patterson is listed as a wide receiver but he is going to be a solid option this year because of everything else he can do one the field. Matt Nagy is one of the brightest offensive minds in the game and he does a good job of running all kinds of misdirections and motions to get guys production out of the backfield.

Last year Patterson had 42 rush attempts for 228 yards and a touchdown and Nagy will build on that this year. Patterson has a chance to be the second-highest scoring fantasy wideout for the Bears this season.

willie snead
Tommy Gilligan/USA TODAY Sports

3. Willie Snead, Baltimore Ravens

Backing a Ravens receiver can be tough especially with how Lamar Jackson faired last year throwing the ball, but he is going to take a big step forward this season and the passing game is going to be much improved.

Last year, Snead finished with 651 yards receiving and a touchdown. If it's going to be anyone on the Ravens that has success catching the ball it will be Snead.

This is a guy to store on your bench for the first few weeks to see how he does, and if he performs well you are going to be happy you have him.

2. Adam Humphries, Tennessee Titans

Adam Humphries was a solid wideout with the Buccaneers, but was overshadowed by DeSean Jackson and Mike Evans and this is a breakout spot for him with the Tennessee Titans. Last year, Humphries caught 76 passes for 816 yards and five touchdowns.

There is a very good chance Humpries leads the Titans in receiving this year which makes him a very good fantasy option.

Tyrell Williams, Chargers

1. Tyrell Williams, Oakland Raiders

All eyes for Raiders fans will be on Antonio Brown and what he can do this upcoming season and that's where defenses will also have their eyes, which will open up room for Tyrell Williams.

Last season, Williams finished with 41 receptions for 653 yards and five touchdowns. As the true number two receiver, his stats should go way up. This is a guy you can find in the late rounds of your draft, but his numbers at the end of the year has a chance to be top 20 among Fantasy Football wideouts.