Juan Carlos Oviedo will begin his rehab assignment Monday at High-A Jupiter. He will start and is scheduled to go one inning. Oviedo has been cleared to start pitching in minor league games and is eligible to return from his suspension on July 23. Monday will mark the first time he's taken the hill in 2012. Oviedo may not need long to reclaim Miami's closer job once he's activated. Marlins manager Ozzie Guillen said Sunday that Oviedo could share the closer job with Health Bell when he returns.