Miami Dolphins coaches Mike McDaniel and Anthony Weaver express confidence in an inexperienced secondary that has onlookers antsy.

Miami Dolphins rookie cornerback Jason Marshall Jr. has been putting together a strong training camp and preseason so far. But it's his recent emergence in the slot that has coaches and teammates buzzing this week.

Miami Dolphins cornerback Jack Jones knows exactly how it looked. His brutal day of practice against the Detroit Lions last week was all over social media with highlights of wide receiver Amon-Ra St. Brown leaving Jones in the dust.

Effort cannot be taught. Hustle cannot be taught. Grant has it and the Dolphins couldn't be more thrilled. "I think effort ultimately is a choice, right?" Dolphins defensive coordinator Anthony Weaver said as Miami prepared for its third week of preseason.

Minkah Fitzpatrick isn’t merely the Dolphins’ most accomplished defensive back and best safety. He’s also, it appears, something of a Swiss Army knife. Fitzpatrick revealed this week that defensive coordinator Anthony Weaver has decided to use him in multiple roles.

Full practice report from the Dolphins’ intrasquad session Wednesday before they face the Jaguars in a joint practice Thursday.

Miami Dolphins' secondary shakeup: Anthony Weaver's bold confidence and Jason Marshall's surprising role shift.

Miami Dolphins defensive coordinator Anthony Weaver praised the cornerbacks and emphasized the importance of the pass rush.