Aaron Donald's confirmed absence from the Los Angeles Rams' Week 1 opener against the San Francisco 49ers stems from official team decisions prioritizing his conditioning after more than two years in retirement. Coach Sean McVay ruled out the long-haul trip to Australia and the associated time-zone demands, opting instead for additional ramp-up work at the team facility to preserve long-term availability. The 35-year-old defensive tackle, who rejoined the Rams in late August on a one-year deal alongside Myles Garrett, has shown strong individual progress in workouts but is not yet at full game readiness. This verified status underpins the market's 100% implied probability on "No," reflecting consensus among traders with real stakes. Late scratches or schedule shifts remain remote possibilities that could theoretically alter resolution.