Defensive end Dion Jordan has rejoined the Miami Dolphins rested, recharged and ready to start his season after a forced layoff.

The 2013 first-round draft pick sat out the first six games without pay for twice violating the NFL's substance abuse policy. With his suspension lifted, Jordan returned to practice Tuesday and might be activated for Sunday's game at Jacksonville.

Jordan said he made a mistake and learned a lesson. He was first suspended July 3 after testing positive for a prohibited stimulant. As the Dolphins were notified Sept. 19 that his suspension was lifted, they were advised of a second suspension.

Jordan, who was allowed to take part in the exhibition season, said he's unsure whether he'll play this week.

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