It appears that Patrick Mahomes and the Kansas City Chiefs will be without wideout Sammy Watkins for the next few weeks due to a hamstring injury (per NFL Network’s Tom Pelissero). Watkins injured his hamstring during the second quarter against the Las Vegas Raiders on Sunday.

Watkins had proven to be a viable option downfield through Week 5. He’d caught 72.4 percent of his targets for 222 yards and two touchdowns. After taking a pay cut to stay with Mahomes and the Chiefs this season, Watkins decided to return due to his chemistry with his star quarterback and a chance to repeat for another Super Bowl victory.

Watkins was in good spirits as he took to his Twitter account to post a message following the injury:

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The Chiefs do have other dependable options at the wide receiver slot, but losing Watkins does come at an expense. The club will more than likely look for the continued production from Tyreek Hill, who leads all wideouts with 364 receiving yards and four touchdowns through Week 5. Tight end Travis Kelce has been spectacular in normal fashion as well, leading the team overall with 405 receiving yards along with three touchdowns.

The Chiefs suffered a disappointing loss to the Raiders on Sunday, handing them their first loss of the season. The Raiders had previously lost two in a row and were desperate for an unlikely win against the Chiefs.

With Watkins sidelined for possibly two weeks, the Chiefs will have to make due against the surging Buffalo Bills and the Denver Broncos in Weeks 6 and 7.