Miami Dolphins running back Knowshon Moreno has been sidelined with a knee problem.
Moreno has a knee injury and might need to have arthroscopic surgery.
The injury isn't regarded as serious.
Lamar Miller has been working with the starters.
The Dolphins had one of the worst running games in the NFL.
Follow me on Twitter: @RavensInsider
Aaron Wilson covers the Ravens for The Baltimore Sun
Check out our partners at TiqIQ for the best deals on all games on the 2014 NFL schedule.
AUG 28 Joel Corry
Between injuries, trades and positional battles, the financial landscape for several key players has shifted dramatically.
AUG 26 Joel Corry
The highly productive Dallas wideout is headed for a big-time payday.
AUG 22 Ari Nissim
Ten players closing in on lucrative new paydays.