The Kansas City Chiefs already have ruled out wide receiver JuJu Smith-Schuster for their Week 8 game due to a hamstring injury.Coach Andy Reid also ruled out starting cornerback Jaylen Watson on Monday. Watson, 26, reportedly suffered a fractured ankle and could be done for the season.Smith-Schuster, 27, left Sunday’s 28-18 win over the San Francisco 49ers in the first quarter after aggravating the hamstring he first injured Thursday in practice. He was not targeted prior to exiting.Smith-Schuster has nine catches for 147 yards and a touchdown in six games (three starts) this season.Watson was on crutches and wearing a cast after the game. He was having tests Monday to determine the severity of the injury and whether he could return this season.