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.

We've already talked about the offensive side of the ball when it comes to storylines to monitor during the Miami Dolphins' joint practice session with the Jacksonville Jaguars on Thursday. So now it's time to turn things over to Anthony Weaver and Co.

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.

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

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

As Robinson was down on the field, Miami defensive coordinator Anthony Weaver and fellow linebacker Jaelan Phillips rushed to his side before a cart was brought out.