​​Dallas Cowboys defensive lineman David Irving has not touched the field for the Cowboys since a Week 7 game against ​Washington, where he recorded his only sack of the season.

The Cowboys have already ruled Irving out of Saturday's playoff game against the Rams, citing a high-ankle sprain sustained after a Nov. 1 practice. This Saturday marks Irving's 16th missed game of the season, prompting some to wonder if it's more than just an ankle that's keeping him off the field.

According to Mike Fisher of 247Sports, Irving has failed to comply with the NFL's drug policy by missing multiple tests the past two months. There is no evidence that Irving failed a test since serving his four-game suspension to start the season, but "failure to comply" counts the same as a failed test for NFL players; meaning if the Cowboys were to activate Irving, it could prompt league action. 

The 25-year-old defensive lineman has now missed the first quarter of the season in back-to-back years due to suspension. In 2017, Irving served a four-game ban for violating the ​NFL's performance enhancing drugs policy.

Irving signed a one-year, $2.91 million deal this past offseason. 

Though he is certainly talented, with more trouble with the NFL potentially on the horizon, Irving very well may have played his final game with Dallas.