Need Fantasy Football draft advice? Talk to CBS Sports on your Google Assistant to get insights on the best sleepers and to help decide between players. Just start with, "Hey Google, talk to CBS Sports."     

The point of tiers is to consolidate rankings of players into groups based on expectations. It's a necessary step in the process of getting ready for Draft Day -- and a secret of the pros.

But the most important person you take advice from on Draft Day is yourself. These tiers are mine, but I encourage you to shuffle them to your liking. At the very least, this is a good jumping-off point for you. 

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Once you tailor these to your specifications, you'll know where the strengths and weaknesses of each position are. Then on Draft Day, you'll know when you need to draft a player at a certain position or wait another round to get someone in a similar tier. It's a huge advantage to have over your unprepared opponents.

Need further help? Hit me up on Twitter @daverichard or on Facebook. Enough chit-chat, here are my Running Back Tiers heading into the third week of the preseason: 

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NON-PPRPPR
ELITEELITE
ROUND 1ROUND 1
Todd GurleyTodd Gurley
Ezekiel ElliottLe'Veon Bell
Le'Veon BellDavid Johnson
David JohnsonEzekiel Elliott
Saquon BarkleySaquon Barkley
Kareem HuntKareem Hunt
Leonard FournetteMelvin Gordon
Melvin GordonAlvin Kamara
Alvin Kamara
Dalvin Cook


NON-PPRPPR
NEAR-ELITENEAR-ELITE
ROUNDS 2, 3ROUNDS 2, 3
Christian McCaffreyChristian McCaffrey
Jordan HowardDalvin Cook
Devonta FreemanLeonard Fournette
Alex CollinsJordan Howard
Derrick HenryDevonta Freeman
Joe MixonAlex Collins

Joe Mixon


NON-PPRPPR
HIGH-RISK HIGH-REWARDHIGH-RISK HIGH-REWARD
LATE ROUND 3 - ROUND 4ROUNDS 3, 4
Jerick McKinnonJerick McKinnon
LeSean McCoyLeSean McCoy
Kenyan DrakeDerrick Henry
Royce FreemanKenyan Drake
Jamaal WilliamsLamar Miller
Jay AjayiRoyce Freeman
Lamar Miller
Carlos Hyde


NON-PPRPPR
VERY GOODVERY GOOD
ROUNDS 5, 6ROUNDS 5, 6
Kerryon JohnsonJamaal Williams
Marshawn LynchCarlos Hyde
Rex BurkheadJay Ajayi
Mark IngramKerryon Johnson

Mark Ingram

Rex Burkhead

Marshawn Lynch


NON-PPRPPR
NO. 3/LESS UPSIDENO. 3/LESS UPSIDE
EARLY ROUND 7EARLY ROUND 7
Chris CarsonDuke Johnson
Tevin ColemanChris Carson
Marlon MackTevin Coleman
Peyton BarberMarlon Mack
Isaiah CrowellIsaiah Crowell


NON-PPRPPR
PATIENCE PAYSPATIENCE PAYS
LATE ROUND 7 - ROUND 9ROUND 8/EARLY ROUND 9
Rashaad PennyDion Lewis
Sony MichelPeyton Barber
Duke JohnsonRashaad Penny
Dion LewisSony Michel
Ronald Jones
Corey Clement
Aaron Jones


NON-PPRPPR
HIGH-POTENTIAL BACKUPSHIGH-POTENTIAL BACKUPS
ROUNDS 10, 11LATE ROUND 9 - ROUND 11
Tarik CohenTarik Cohen
Matt BreidaChris Thompson
James WhiteJames White
Chris ThompsonRonald Jones
C.J. AndersonCorey Clement
Jordan WilkinsAaron Jones
Giovani BernardMatt Breida
Nick ChubbGiovani Bernard
Ty MontgomeryC.J. Anderson
Jeremy HillJordan Wilkins
Adrian PetersonTy Montgomery
Austin EkelerJeremy Hill
Jonathan WilliamsAdrian Peterson


NON-PPRPPR
LOW-END BACKUPSLOW-END BACKUPS
ROUND 12+ROUND 12+
D'Onta ForemanTheo Riddick
Nyheim HinesNick Chubb
Doug MartinAustin Ekeler
Devontae BookerDoug Martin
LeGarrette BlountD'Onta Foreman
James ConnerJonathan Williams
Chase EdmondsBilal Powell
Bilal PowellNyheim Hines
Latavius MurrayChase Edmonds
Spencer WareLatavius Murray
John KellySpencer Ware
Rod SmithDevontae Booker
Rob KelleyLeGarrette Blount
Samaje PerineJames Conner
Theo RiddickJohn Kelly
C.J. ProsiseRod Smith
Frank GoreC.J. Prosise

Frank Gore

T.J. Yeldon

Samaje Perine

So what sleepers should you snatch in your Fantasy Football draft? And which huge running backs do you need to jump all over? Visit SportsLine now to get Fantasy Football cheat sheets from the model that called Alvin Kamara's huge breakout last season and find out.