The exodus from the Detroit Lions went beyond just quarterback Matthew Stafford in the offseason, as wide receiver Kenny Golladay also bolted for greener pastures. Golladay inked a four-year, $72-million contract with the New York Giants, an effort to improve an offense around quarterback Daniel Jones. Adding Golladay is also an attempt to open up lanes for running back Saquon Barkley, but where should each player be in your 2021 Fantasy football rankings?

Will Golladay be one of the 2021 Fantasy football sleepers in the Big Apple? Will Barkley be one of the biggest 2021 Fantasy football busts? 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: Broncos receiver Courtland Sutton. The fourth-year pro suffered a torn ACL in his first game last season, but was already running routes in March. He is expected to be ready for the regular season and had a Pro Bowl year in 2019 with 72 catches for 1,112 yards and six touchdowns.

Sutton put up those numbers in a passing offense that ranked 28th and used three starters at quarterback. The Broncos are undecided as to whether Teddy Bridgewater will unseat incumbent Drew Lock, but Sutton's production shouldn't suffer no matter who is taking snaps. In fact, he was a top-20 fantasy receiver two years ago. Sutton's 2021 Fantasy football ADP is in the seventh round, but SportsLine's 2021 Fantasy football wide receiver rankings favor him over receivers being taken earlier, including Chris Godwin and Kenny Golladay.

Another sleeper that SportsLine's Fantasy football rankings 2021 have identified: Buccaneers tight end Rob Gronkowski. The 32-year-old veteran returned after a brief retirement to reunite with former Patriots teammate Tom Brady in 2020, catching 45 passes for 623 yards and seven touchdowns. He also hauled in eight of 14 targets for 110 yards and two touchdowns in the Buccaneers' Super Bowl run.

Gronk is a one-man hype machine off the field, but he maintains many of the elite qualities that made him arguably the best tight end in the NFL. He inked a one-year, $10-million deal to return to Tampa Bay for his 10th pro season and has a unique kinship with Brady that goes beyond the stats. SportsLine agrees, ranking Gronkowski ahead of tight ends like Jonnu Smith, Hunter Henry, Logan Thomas and Evan Engram in their Fantasy football rankings 2021.

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.