Commanders ready Marcus Mariota with Jayden Daniels (knee) idle

(Photo credit: Tork Mason-USA TODAY Network via Imagn Images)

Quarterback Marcus Mariota is preparing to start for the Commanders on Sunday with Jayden Daniels unavailable for Wednesday's practice.

Daniels threw on the field early Wednesday morning but coach Dan Quinn said there is a return-to-play checklist he must work through before he's in the conversation about starting against the Las Vegas Raiders on