The weather is taking another downturn, and that can have big fantasy football ramifications. After three months of weekly bludgeonings, the running back slate is also much different on the doorstep of December than it was in September. As such, it's time to update your lineup as trade deadlines have begun to hit around the league.Here's a look at some of the dead weight you can cut loose, and updated options that could be available in your league.Fantasy Football RBs to drop, including Rhamondre Stevenson:Rhamondre Stevenson at New England Patriots v Cincinnati Bengals - Source: Getty#10 - Brian Robinson Jr.#9 - Emari Demercado#8 - Bam Knight#7 - Emanuel Wilson#6 - Blake Corum#5 - Tyjae Spears#4 - Kimani Vidal#3 - Raheem Mostert#2 - Tank Bigsby#1 - Rhamondre StevensonRhamondre Stevenson came into the season as the bridge for TreVeyon Henderson. After seeing what Henderson can do, there's little reason for Mike Vrabel to go back to the running back that he never chose.It's been a decent run for Kimani Vidal, but with the Chargers posting videos of Omarion Hampton back at practice on X on Tuesday, now is as good a time to move on as any, especially with Vidal trending down in recent weeks.Brian Robinson Jr. was seen as a perfect stash earlier in the year when the San Francisco 49ers were starting to catch the injury bug. However, Christian McCaffrey managed to survive it intact, which means it is time to move on from the former Washington Commanders back.Fantasy Football RBs to add, including Devin Neal:Devin Neal at New Orleans Saints v Carolina Panthers - NFL 2025 - Source: Getty#10 - Jordan Mason#9 - Ollie Gordon II#8 - Kareem Hunt#7 - Isiah Pacheco#6 - Zach Charbonnet#5 - Woody Marks#4 - Sean Tucker#3 - Devin Neal#2 - Kyle Monanagai#1 - Kenneth GainwellDevin Neal is the talk of the fantasy football world when it comes to waiver wire running backs with Alvin Kamara's health in question. However, he might not be the top running back to add from your waiver wire.If Kenneth Gainwell is available, you likely need to make room for him. Gainwell has earned 41.2 points over the past two games in some leagues. Jaylen Warren remains the lead back, but the receiving game has been much more kind to Gainwell than the rushing attack on the ground has been for Warren.The Kansas City Chiefs backfield has been in flux, but with the AFC champions awakening once again, adding Hunt and Pacheco are musts heading into the final stretch of the season.Pacheco is aiming to return from an injury that has sidelined him since Week 8 as soon as Thanksgiving, according to NFL insider Jeremy Fowler via a Monday ESPN report. If you have a choice for which one to add to your fantasy football team, go with Pacheco.