Marcus Mariota will start, in place of Jayden Daniels. Mariota is making his third start of the season and has posted a 1-1 record so far.

Of course, injuries can be blamed for many of the struggles. Daniels has already missed three games, including Week 8, and now NFL insider Adam Schefter isn't sure the quarterback will be back for Week 9 either.

Week 8 of the NFL season is in full swing, and there are some key players dealing with injuries. See who's in and who's out.

Jayden Daniels' hamstring injury explained — what happened, his recovery update, and if the Commanders QB will play in Week 9.

Commanders head coach Dan Quinn said on Monday that quarterback Jayden Daniels avoided a serious hamstring injury when he was hurt in last Sunday’s loss to the Cowboys, but he added that it might be significant enough to keep him from playing in Week 8.

During Thursday's press conference, Kansas City Chiefs quarterback Patrick Mahomes commented on not facing Jayden Daniels in Week 8 |@EdEastonJr

The Washington Commanders continue to lose offensive playmakers to injury and this week they’ll be without their key offensive playmaker, quarterback Jayden Daniels. Daniels was forced from their Week 7 game against the Cowboys due to a hamstring injury and now will miss their Monday Night Football matchup with the Chiefs, per Ian Rapoport.

It's the Mac Jones show for the 49ers for at least one more week as Brock Purdy is out with a toe injury that's caused him to miss all but two contests this season. Jones is 4-1 as a starter in Purdy's absence. The 49ers will also be without receiver Ricky Pearsall once again as he battles a knee injury.