The Arizona Cardinals are the last remaining undefeated team in the NFL, but they could be in trouble if Kyler Murray's latest debacle proves to be serious.

According to Field Yates of ESPN, Murray has been added to the Cardinals' injury report because of a right shoulder issue. He did participate in the team's practice, but in a limited capacity due to the issue. While Arizona did not reveal further details about the issue, Yates noted that the superstar quarterback received some medical attention during the closing stages of their Week 5 win over the San Francisco 49ers.

Kyler Murray has undoubtedly been phenomenal for the Cardinals so far, and he is a big reason why their record remains unscathed until today. He has already thrown for 1,512 yards on a 75.2 percent completion rate en route to 10 touchdowns — a big reason why he is now the odds-on favorite to win MVP.

While it's still too early to panic given that the Cardinals have not really mentioned anything about the severity of the injury, it still has to be concerning for Arizona fans. They'll be facing Baker Mayfield and the Cleveland Browns next, which is all the more reason they can't afford to lose their main man in the offense.

Hopefully, though, the injury is not serious and Murray just needs a little rest to be able to suit up and play again for the team.