The news is actually a lot better than it first looked. Here's the rundown:
What happened: Jeanty went down during Raiders practice on August 23 after diving for a catch and landing awkwardly on his right leg. Initial reports sounded scary — some feared a catastrophic knee injury — but Ian Rapoport and Adam Schefter confirmed it's a sprained ankle, not a long-term issue (from the Ashton Jeanty page).
How serious? On one hand, there's no official timetable yet. On the other, the prognosis is "significantly better than initially feared" and he's expected back to practice sooner than originally thought. The wiki lists it as not expected to be long-term.
Josh & Hayden from Underdog Fantasy Football are a bit more cautious — they're saying he could be in question for Week 1 and maybe Week 2 since he'll miss the rest of preseason: .
Fantasy takeaway: If you drafted Jeanty (he went RB7, 13th overall in 2026 fantasy drafts), it's worth stashing Mike Washington Jr. — he's the clear handcuff and has looked solid in preseason. But the Raiders built their whole offseason around Jeanty, so unless this lingers, he should be the bell cow once healthy.