49ers RB Isaac Guerendo (foot) is active for tonight's game vs. the Rams. He was listed as questionable after only getting in a limited practice on Tuesday. But Guerendo downplayed the injury throughout the week and was reportedly expected to play tonight even before getting through warmups. There have been no reports so far about the rookie's expected workload in this one. He shapes up as a risk/reward fantasy play. Check the new-and-improved Who To Start Tool to see if Guerendo makes sense for your starting lineup. RBs Patrick Taylor and Ke'Shawn Vaughn are also active for San Francisco tonight; RB Israel Abanikanda is a healthy scratch.