Doctors are reportedly still evaluating Watkins right now, but it looks like he could end up sitting out against the Bills and the Broncos, depending on the severity of the issue.
Watkins, 27, is a former first-round pick of the Bills back in 2014 after they traded up with the Rams to get him. Buffalo would later trade him to the Rams.
Watkins played out the final year of his four-year, $19.935 million rookie contract before agreeing to a three-year, $48 million deal that included $30 million guaranteed with the Chiefs back in 2018.
The Chiefs and Watkins agreed to a new contract that will pay him $9 million for the 2020 season this past April.
In 2020, Watkins has appeared in five games for the Chiefs and caught 21 passes for 222 yards receiving and two touchdowns.