Chiefs head coach Andy Reid said Fenton (hamstring) won't practice Wednesday, Matt McMullen of the Chiefs' official site reports.
Fenton played 96 percent of the team's defensive snaps and recorded two tackles during Monday's win over the Raiders, but he presumably picked up a hamstring injury as well. The severity of the issue remains unclear, but if he doesn't return to practice Thursday or Friday, he'll be in danger of being sidelined for Week 6.