Entering Week 4 of the fantasy football season, the landscape has changed radically, and managers are now trying to adjust on the fly. With injuries and value changes impacting all managers, there are several tough decisions to be made.

Carolina Panthers wide receiver Adam Thielen injured his hamstring in the process of catching a touchdown pass against the Las Vegas Raiders. The 34-year-old receiver will now miss at least four games as the team has placed him on injured reserve, NFL insider Ian Rapoport reported on Tuesday.