For most fantasy football leagues, the regular season has come and gone, and six teams are left fighting for the championship. Room for error is behind us now, you either win or watch somebody else claim the title. This is when start 'em, sit 'em decisions make or break the entire season, so our Week 15 fantasy RB PPR rankings should be starred on your favorites list all week.You know the drill by now the upper echelon of the PPR cla s should be automatically locked in. That includes fantasy MVP candidate Tony Pollard (@ Jaguars in Week 15) and Week 14 behemoth Miles Sanders (@ Bears), who both combine ma sive talent with superb matchups. Jacksonville has surrendered the ninth-most PPR points to RBs this season, and only three teams have allowed more to the position than Chicago.With Alvin Kamara (vs. Falcons) coming off a bye and facing a PPR-generous Atlanta D, he's right up there with Najee Harris (@ Panthers) as a must-start thanks to a favorable matchup. Ditto for Isiah Pacheco Mychal Mulder Jersey (@ Texans), who ate well in Week 14 against the Broncos and now gets to tee off against the worst rushing D in the NFL. There's plenty of room for him and ace receiving back Jerick McKinnon (@ Texans) in fantasy leagues. Zonovan Knight (vs. Lions) proved he's not a one-hit wonder last weekend, and he now draws a Detroit squad that ranks last in points yards allowed. He's clearly the preferred play over Michael Carter (vs. Lions), though Carter, who had six targets last week, has a little higher floor in PPR formats.WEEK 15 STANDARD RANKINGS: | | | | | We understand owners being wary of Jamaal Williams (@ Jets) after a rough week and guys in tough Jordan Poole Jersey matchups like David Montgomery (vs. Eagles), Travis Etienne Jr. (vs. Cowboys), and Joe Mixon (@ Buccaneers). But Williams has been a TD hog in just about every game this season, and the other three have high-volume roles in chain-moving offenses.WEEK 15 PPR RANKINGS: | | | | That includes Aaron Jones (vs. Rams), who faces a shell of L.A.'s Super Bowl defense. Seemingly the only player from the Rams who has rejuvenated himself since the start of the season is Cam Akers (@ Packers), who suddenly started gaining chunk yardage and scoring TDs. Now is the time for your patience in Akers to be rewarded! Green Bay surrendered a combined 518 rushing yards and four rushing TDs in Weeks 12 and 13.WEEK 15 FANTASY PICKS: | | Welcome back to fantasy relevance, JK Dobbins (@ Browns). Now that you're here, enjoy a fantasy feast against a Cleveland squad serving up the fourth-most PPR points to Marquese Chriss Jersey RBs this season. Even Gus Edwards (@ Browns) can put up flex-worthy numbers in that matchup, though his floor and ceiling are lower in PPR formats. Brian Robinson and Antonio Gibson (vs. Giants) are two more committee backs in good situations New York has surrendered the fifth-most rushing yards and 11 total TDs to RBs. Don't worry too much about James Conner (@ Broncos). The Chiefs went off against Denver last week, and Kyler Murray will want to dump off to his security blanket to avoid pocket pre sure.WEEK 15 DFS: | Other guys we don't love in standard formats but like just fine in PPR include Cordarrelle Patterson (@ Saints) coming off a bye, D'Andre Swift (@ Jets) against a squad that squashes rushes but can be exploited via backfield catches, and both Leonard Fournette and Rachaad White (vs. Bengals). White may have taken over the majority of the carry share in Tampa, but both still have upside as pa s-catchers in a game that should be high scoring. The same can be said for Devin Singletary (vs. Dolphins) and Raheem Mostert (@ Bills) in what should be a shootout. All of these backs have fairly low ceilings, but they can still work as flexes in 12-team leagues.WEEK 15 Golden State Warriors T-Shirts DFS LINEUPS: | If Kenneth Walker III and DeeJay Dallas (vs. 49ers) remain sidelined with ankle injuries, expect Travis Homer to get the bulk of the RB touches in a brutal matchup. He wouldn't be a recommended play, but he could pile up some cheap catches if you're desperate. Ditto for Ameer Abdullah (vs. Patriots) if Josh Jacobs (finger) is out, though Zamir White would likely get more carries.Fantasy owners will also have to watch for injury updates on Jeff Wilson Jr. (hip) and Damien Harris (thigh). The latter has some flex value because of the favorable matchup, but Wilson Jr. should be left on benches even if he's active.Note: We'll be updating these RB PPR rankings throughout the week, so check back for analysis and the latest player movement. Rankings based on full-point PPRscoringRank Player1 Christian McCaffrey, 49ers @ Seahawks2 Rhamondre Stevenson, Patriots @ Raiders3 Austin Ekeler, Chargers vs. Titans4 Derrick Henry, Titans @ Chargers5 Dalvin Cook, Vikings vs. Colts6 Tony Pollard, Cowboys @ Jaguars7 Josh Jacobs, Raiders vs. Patriots8 Saquon Barkley, Giants @ Commanders9 Miles Sanders, Eagles @ Bears10 Alvin Kamara, Saints vs. Falcons11 Nick Chubb, Browns vs. Ravens12 Isiah Pacheco, Chiefs @ Texans13 Najee Harris, Steelers @ Panthers14 Jonathan Taylor, Colts @ Vikings15 Zonovan Knight, Jets vs. Lions16 Jamaal Williams, Lions @ Jets17 Brian Robinson Jr., Commanders vs. Giants18 David Montgomery, Bears vs. Eagles19 Joe Mixon, Bengals @ Buccaneers20 Ezekiel Elliott, Cowboys @ Jaguars21 Travis Etienne Jr., Jaguars vs. Cowboys22 Aaron Jones, Packers vs. Rams23 Cam Akers, Rams @ Packers24 Jerick McKinnon, Chiefs @ Texans25 JK Dobbins, Ravens @ Browns26 Kenneth Walker III, Seahawks vs. 49ers27 Antonio Gibson, Commanders vs. Giants28 James Conner, Cardinals @ Broncos29 Raheem Mostert, Dolphins @ Bills30 Cordarrelle Patterson, Falcons @ Saints31 Rex Burkhead, Texans vs. Chiefs32 Latavius Murray, Broncos vs. Cardinals33 D'Andre Swift, Lions @ Jets34 Leonard Fournette, Buccaneers vs. Bengals35 Rachaad White, Buccaneers vs. Bengals36 Gus Edwards, Ravens @ Browns37 Devin Singletary, Bills vs. Dolphins38 D'Onta Foreman, Panthers vs. Steelers39 Michael Carter, Jets vs. Lions40 Chuba Hubbard, Panthers vs. Steelers41 Dare Ogunbowale, Texans vs. Chiefs42 AJ Dillon, Packers vs. Rams43 James Cook, Bills vs. Dolphins44 Samaje Perine, Bengals @ Buccaneers45 Jordan Mason, 49ers @ Seahawks46 Kenneth Gainwell, Eagles @ Bears47 Tyler Allgeier, Falcons @ Saints48 Kyren Williams, Rams @ Packers49 Ameer Abdullah, Raiders vs. Patriots50 Travis Homer, Seahawks vs. 49ers51 Pierre Strong Jr., Patriots @ Raiders52 Joshua Kelley Chargers vs. Titans53 Kareem Hunt, Browns vs. Ravens54 Alexander Mattison, Vikings vs. Colts55 Darrynton Evans Andrew Wiggins Jersey , Bears vs. Eagles56 Jayle