The Los Angeles Chargers suffered a devastating setback as star left tackle Rashawn Slater was ruled out for the entire 2025 NFL season after rupturing his patellar tendon during practice. The injury occurred in an 11-on-11 drill when another player fell awkwardly onto Slater's left leg. Slater, unable to bear weight on his leg, was quickly attended to by trainers before being carted off the…