The Miami Dolphins reportedly released cornerback Richard Marshall after one season. (Joel Auerbach/Getty Images)
The move clears $4.55 million in salary.
Marshall signed a three-year, $16 million contract last season, but only played four games due to a back injury. He was paid $6 million for those four games.
Marshall was in competition for a starting cornerback job with Jimmy Wilson.
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Marshall, 28, played his first five seasons with the Carolina Panthers after being drafted in the second round of the 2006 NFL Draft. He has 18 career interceptions in 100 games played.