What's confirmed. Henderson described "a series of unexplained neurological symptoms" that led to hospitalization. He said comprehensive medical testing came back "positive and reassuring," but that doctors have not identified a cause. He also said the issues have affected his strength, coordination, and some physical functions, and that he is working with specialists and physical therapists to get back to full health. This comes from Henderson's statement, not from a Patriots injury designation alone.
How we got here. New England had listed Henderson away from the team with an illness earlier this week. Coach Mike Vrabel said Wednesday that Henderson was away with illness, and he then missed Thursday practice as well, per Mike Reiss and Underdog NFL. Friday's statement is the first public explanation that the absence involved neurological symptoms and a multi-day hospital stay. That is a clear escalation from a generic illness tag.
Who gets the work. With Henderson unavailable, Rhamondre Stevenson has already been handling the lead role. When Henderson missed Week 8 at Miami, Stevenson took the bulk of the touches. Expect that pattern to continue against Green Bay on Sunday at 4:25 PM ET until Henderson is cleared and practicing. Wait for the final injury report and inactives before locking snap shares.
What it means for RSO. This is not a one-day flu miss. A neurological scare with an unknown cause and ongoing specialist care means you should plan as if Henderson is out for Week 9 and uncertain beyond that until there is a return timeline. Owners who already stashed Stevenson are in better shape. Soft illness designations earlier in the week understated the severity.
What to do now. Sit Henderson for Week 9. Keep him rostered in dynasty and contract leagues unless you are in a hard roster crunch, because the testing note is reassuring even while the cause is open. Prefer Stevenson as the direct cover if he is available. Stick to Henderson's statement and official practice reports.