Mostert was a limited practice participant Wednesday due to ankle and knee injuries.
Fellow running back De'Von Achane was also limited Wednesday in his first official practice since being designated for return from injured reserve after missing the Dolphins' prior four games with a knee injury. The Dolphins should have a good chance at having both Achane and Mostert available after a Week 10 bye, in which case the two running backs would likely split work Sunday against the Raiders. The duo made the timeshare arrangement work for fantasy managers earlier this season, but Mostert's production slipped the past month even with Achane out of the lineup, in part because Miami's offense slowed down overall. A home matchup with Las Vegas certainly offers a nice opportunity for Tua Tagovailoa and company to get back on track.