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MIAMI (CBSMiami/AP) — The Miami Dolphins are used to being crowned the 'offseason champs' but that is far from the case this year.

The Dolphins will remain in the market for a running back after their second failed courtship this week.

Former NFL rushing champion Chris Johnson visited the Dolphins on Thursday, but agreed to terms on a one-year contract to stay with the Arizona Cardinals.

Last week the Dolphins signed C.J. Anderson to an $18 million, four-year offer sheet, but the Denver Broncos matched it Tuesday.

The Dolphins need a reinforcement at running back to complement second-year pro Jay Ajayi. They lost starter Lamar Miller, who signed with Houston last week.

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