https://ground.news/article/patrick-mahomes-undergoes-surgery-for-torn-acl-rehab-to-begin-immediately
"On Dec. 14, Mahomes tore the ligament when spun to the ground late in the 16-13 loss to the Los Angeles Chargers, ending the Chiefs' season that day
The Chiefs said Mahomes will begin his rehabilitation process immediately, with typical recovery about nine months putting his Week 1, 2026 availability in question..."