On the quicker end, Mahomes could be ready for Week 1 with time to spare. On the slower end, he doesn't make his debut until November. Given how important the 30-year-old is to the future of the franchise, it has every reason to be cautious.

Patrick Mahomes has torn the ACL in his left knee. The star quarterback was hurt while he tried to keep the Kansas City Chiefs’ postseason hopes alive in the waning seconds of a 16-13 loss to the Los Angeles Chargers on Sunday.

Patrick Mahomes’ brutal knee injury against the Los Angeles Chargers on Sunday is more severe than initially reported, leaving Kansas

The Kansas City Chiefs’ stunning fall has turned one of the NFL’s most dominant dynasties into a cautionary tale. Just one season after a 15-2 campaign, the Chiefs are now 6-8 and officially out of playoff contention.

The Chiefs' quarterback was hurt in the closing minutes of Sunday's loss to the Los Angeles Chargers, which ended the Chiefs' decadelong streak of making the postseason.