"Fantasy Football Week 15: RB and WR Rankings, Start 'Em, Sit 'Em, and Matchup Report"

The Week 15 fantasy football rankings for running backs include Christian McCaffrey, Kyren Williams, Bijan Robinson, Alvin Kamara, and Rachaad White as the top five options. David Montgomery and Jahmyr Gibbs have favorable matchups, while Derrick Henry and Tony Pollard are positioned well for success. James Cook and Breece Hall are worth considering, while Ezekiel Elliott and Austin Ekeler face challenges. Antonio Gibson and Aaron Jones have uncertain statuses, and Josh Jacobs is unlikely to play. Joe Mixon and Chase Brown have favorable matchups, while Ken Walker and Zach Charbonnet face a tough defense.