The Miami Dolphins will be without wide receiver Mark Duper for the rest of the season because of the NFL's substance abuse policy, but offensive guard Roy Foster says the rest of the team is clean.

The NFL suspended Duper and Dallas Cowboys' defensive back Victor Scott for violating the league's substance abuse policy. The suspensions are for 30 days, which means both players will miss the rest of the season.Neither the league nor the teams would say what drugs were involved. Duper, 29, became the first Miami player to be penalized for substance abuse since 1983.

Coach Don Shula declined to comment on whether Duper's problem was an isolated one for the team.

Duper, a seven-year veteran, has done work with the "Say No To Drugs" program. Several teammates said they were shocked by the suspension.