Quarterbacks who have been able to take major steps forward in their second and third seasons have made waves, with Patrick Mahomes, Lamar Jackson and Josh Allen all having MVP-caliber years. Now, another group of young quarterbacks like Joe Burrow, Justin Herbert and Kyler Murray will try to follow in their footsteps. Establishing a hierarchy in a league with so much quarterbacking potential is critical when crafting your 2021 Fantasy football rankings.

Locating 2021 Fantasy football sleepers is not an easy task, which is why finding a reliable set of Fantasy football rankings 2021 is critical during a challenging 17-game season. Before making any 2021 Fantasy football picks, be sure to check out the 2021 Fantasy football cheat sheets from the proven computer model at SportsLine.

Last year, the model accurately predicted a big season for Titans wide receiver A.J. Brown. The second-year playmaker had a fifth-round Fantasy football ADP, but the SportsLine Projection Model predicted he'd be a WR1. The result: Brown caught 70 passes for 1,075 yards and 11 touchdowns to finish as the No. 10 wide receiver in Fantasy football.

Additionally, it's called past Fantasy football sleepers like Derrick Henry in 2019, Christian McCaffrey and Alvin Kamara in 2018, and Davante Adams in 2017. Anybody who banked on players like those made a run at their league title.

The model is powered by the same people who generated projections for all three major Fantasy sites, and it beat human experts last season when there was a big difference in ranking. The projections update multiple times daily, so you're always getting the best Fantasy football advice.

Now, SportsLine has simulated the entire NFL season 10,000 times and released its latest Fantasy football rankings 2021, identifying several potential Fantasy football sleepers. Head to SportsLine now to see them

Top 2021 Fantasy football sleepers 

One of the 2021 Fantasy football sleepers the model is predicting: Colts running back Nyheim Hines. Even with Jonathan Taylor establishing himself as the No. 1 back during a rookie season in which he had 1,468 scrimmage yards and 12 touchdowns, Hines has carved out a role for himself as a third-down back, while his upside in PPR leagues is undeniable.

Hines rushed for a career-high 380 yards and three touchdowns last season while matching his career-high with 63 receptions and setting new bests in receiving yards (482) and receiving touchdowns (four). His 152 touches were also a career-best and he looks like a strong bet to average around 10 touches per game again in 2021. That's why the model ranks him ahead of backs like Kenyan Drake and James Conner, who are going at least three rounds earlier on average in the latest 2021 Fantasy football ADP.

Another sleeper that SportsLine's Fantasy football rankings 2021 have identified: Rams running back Darrell Henderson. The former third-round pick out of Memphis played sparingly as a rookie, but he stepped into a larger role in 2020 after the Rams moved on from Todd Gurley.

Henderson was given 154 touches in 15 games a season ago and could be in line for double that with Akers sidelined and barring a major addition to the Los Angeles backfield. That's a big reason why the model now ranks Henderson ahead of running backs with ninth-round 2021 Fantasy football ADP or better like Kareem Hunt, Raheem Mostert and Melvin Gordon despite Henderson currently carrying a 14th round price tag.

How to find proven 2021 Fantasy football rankings

SportsLine is also extremely high on a surprising quarterback you aren't even thinking about being picked in the middle rounds of drafts. This quarterback is listed as a shocking top-five option in the Fantasy football rankings 2021, ahead of superstars like Patrick Mahomes and Lamar JacksonYou can only see who it is, and the 2021 Fantasy football rankings for every player, at SportsLine.

So which 2021 Fantasy Football sleepers should you target? And which QB shocks the NFL with a top-five performance? Visit SportsLine now to get 2021 Fantasy Football cheat sheets for every single position, all from the model that called A.J. Brown's huge season, and find out.