Mike Clay cautioned managers against spending premium picks on running backs who will be 29 or older in 2025—Christian McCaffrey, Joe Mixon, Derrick Henry, Alvin Kamara, James Conner and Aaron Jones—pointing to a five-year sample in which the average top-15 fantasy RB entered the season at age 25.1 and only 9% of those finishes came from backs 29+. Although several elders cracked the top 15 in 2024, Clay expects a regression toward the historical mean this year. He instead advised leaning into youth: target ascending backs such as Bijan Robinson, Jahmyr Gibbs, Kyren Williams, Breece Hall, Kenneth Walker III and a deep rookie class headlined by Ashton Jeanty and Omarion Hampton. Drafters who fade the graybeards can embrace a Zero-RB build—load up on receivers early, then pounce on younger upside backs in the middle rounds, trusting injuries and attrition to create weekly RB2 starters from that stash.