Here's the breakdown from the wiki on Kyren Williams' slide in the NFL Top 100:
The numbers: He debuted at #78 after his monster 2024 season (1,299 yards, 14 TDs), slipped to #85 in 2025, and dropped further to #89 in 2026 — despite still delivering 1,252 yards and 10 TDs last year (from the Kyren Williams page).
Two main reasons:
Blake Corum's emergence. The Rams are expected to move toward a 50/50 committee in 2026, with Corum taking change-of-pace work after averaging 5.1 YPC and an elite 15.9% explosive run rate in year two. That's the most shared backfield McVay has ever run, and it signals Williams' touch ceiling is shrinking (from the Kyren Williams and Blake Corum pages).
System-dependent profile. Williams grades out in the 91st percentile in run grade and 86th percentile in yards before contact — meaning McVay's scheme creates the holes. But his 35th-percentile elusive rating and 52nd-percentile yards after contact suggest he isn't making defenders miss on his own. That analytic profile limits how voters view him as an elite standalone talent (from the Kyren Williams page).
Flock Fantasy put it bluntly: "Kyren Williams did take a step backwards with his volume this past season where you actually finally saw Blake Corum making an impact for once."
On the flip side, The Fantasy Headliners noted he's still been a top-10 fantasy RB averaging 300+ touches and 13+ TDs per season over three years — so the production is there, but the NFLPA player vote seems to be factoring in the looming committee shift.