The Dallas Cowboys might be in a whirlwind of trouble against the Las Vegas Raiders during their Thanksgiving Day matchup. CeeDee Lamb has officially been ruled out for the game, bringing major fantasy football implications towards Dak Prescott and the Dallas offense.

According to Jay Glazer and John Machota, “CeeDee Lamb was not able to clear concussion protocol.” Amari Cooper is listed as out as well, limiting the Cowboys' wide receive core on Thursday. Dallas has been a reliable source in fantasy football this year, but they won't be as dependable in this game.

With Lamb and Cooper both ruled out, Michael Gallup becomes the WR1 for the Cowboys. Gallup has proven to be a great pass option and receives a sizeable workload as the WR3 on the team. Now, the Cowboys' receiver has a chance to shine and prove himself as a top fantasy option against the Raiders.

For Dak Prescott, his fantasy football outlook takes a hit in Week 12. He's been reliable, but without his top two pass options on the field, Dallas may consider running the ball more often than not. Additionally, the Raiders secondary has played above expectations throughout most of the season, making this is a tough matchup for the Cowboys regardless.

If you have another quarterback option, run with them instead. It's hard to imagine Prescott delivering the same fantasy output without CeeDee Lamb or Amari Cooper in the lineup. However, Michael Gallup and Ezekiel Elliott become strong plays in Week 12. Gallup should be able to produce like a high-end WR2 or low-end WR1. Elliott on the other hand could be in for a massive performance.

We'll see how it plays out, but start Dak Prescott at your own risk. The Cowboys should bounce back to fantasy football supremacy in Week 13 against the New Orleans Saints.