Must-Starts until they have a severe injury or otherwise told not to.  Otherwise known as The Big Five:

• Adrian Peterson of the Minnesota Vikings
• Chris Johnson of the Tennessee Titans
• Arian Foster of the Houston Texans
• Rashard Mendenhall of the Pittsburgh Steelers
• LaDanian Tomlinson of the New York Jets

Here’s a quick review of all the other running backs for week 8 of the NFL regular season:

Ryan Torain (Washington Redskins vs. Detroit Lions): RB2, with potential to be RB1 against this defense.

Javhid Best (Detroit vs. Washington): Low-end RB2. Realistically, he’s a RB3 with the way he’s been performing as of late.  However, don’t give up on this running back, yet.

Fred Jackson (Buffalo Bills vs. Kansas City Chiefs):  Tougher sledding than before. RB3/flex option at best. Waiver wire fodder at worst.

Jamaal Charles/Thomas Jones  (Kansas City vs. Buffalo): RB1s. If they can’t get you touchdowns in this matchup, they sure as heck will gain you yardage.

Knowshown Moreno (Denver Broncos vs. San Francisco 49ers): RB2 for now. Now that Denver has a running game, it might help other facets of Denver.

Frank Gore (San Francisco vs. Denver): RB1. If Darren McFadden with a hurt hamstring can burn Denver, a healthy Frank Gore can do much better.

Ronnie Brown/Ricky Williams (Miami Dolphins vs. Cincinatti Bengals): Low-end RB2, until the Dolphins get their act together.

Cedric Benson (Cincinnati vs. Miami): Low-end RB2, with this inconsistent offense.

Brandon Jackson (Green Bay Packers vs. New York Jets): RB3 or flex at best.  Keep him on the waiver wire for this matchup.

Jonathan Stewart (Carolina Panthers vs. St. Louis Rams): RB2.

Steven Jackson (St. Louis vs. Carolina): Potential RB1; realistically still an RB2. He’s got the will to do it.

Maurice Jones-Drew (Jacksonville Jaguars vs. Dallas Cowboys): Solid RB2/High-end RB3.

Felix Jones/Marion Barber (Dallas vs. Jacksonville): RB3s.

Cadillac Williams (Tampa Bay Buccaneers vs. Arizona Cardinals): Waiver wire fodder.

Tim Hightower/Beanie Wells (Arizona vs. Tampa Bay): Both RB1s, but Hightower gets the starting nod.

Ryan Mathews (San Diego Chargers vs. Tennessee Titans): Low-end RB2/solid RB3 at best. Good luck and best wishes.

BenJarvus Green-Ellis (New England Patriots vs. Minnesota Vikings): Some tough sledding, but a potential low-end RB1.

Marshawn Lynch/Justin Forsett (Seattle Seahawks vs. Oakland Raiders): Low-end RB2s for now.

Darren McFadden (Oakland vs. Seattle): High-end RB1.  He’s running pissed, and he’s motivated. A volatile combination in a running back.

Chris Ivory (New Orleans Saints vs. Pittsburgh Steelers): Low-end RB2. With Drew Brees acting up, Ivory is going to have a target on his chest.

Joseph Addai/Mike Hart (Indianapolis Colts vs. Houston Texans): Low-end RB2 right now. Not against this defense, but as much as Peyton Manning may be desperate to re-establish himself as the best quarterback in the NFL, particularly against their rival.