DAVIE, Fla. -- The Miami Dolphins (1-2) continue their preparation for the Oakland Raiders (0-3).

Here are some notes and observations from Wednesday's practice:

Miami’s defense received some good news. Starting middle linebacker Koa Misi returned to practice from an ankle injury. Misi was injured in Week 1 against the New England Patriots and missed the past two games. Backup linebacker Jason Trusnik has filled in.

Dolphins starting defensive lineman Randy Starks was not practicing Wednesday in the portion open to the media. He also left practice early on Tuesday. Miami will release the nature of Starks’ absence later this afternoon. Also, guard Shelley Smith didn’t practice for the second day in a row. Smith missed last week’s game with a knee injury.