Marshall Jr. shines as a rookie cornerback in coverage and is highlighted for his playmaking potential. His development affects the Dolphins’ immediate corner depth and imparts upside as a future fantasy contributor in IDP formats.

Included in the Week 2 cornerback rotation; Marshall Jr. is part of Miami’s plan to absorb cornerback depth as injuries stress the unit.

Marshall Jr. has shown nickel versatility, moving from the boundary to the inside as a preseason contributor. If he continues to adapt, he could see meaningful snaps in sub-packages, boosting his fantasy ceiling with tackle and forced-play opportunities.

Marshall Jr. shifts to nickel to test a speed- and coverage-driven defensive backfield. His early impact could dictate secondary depth and fantasy IDP value, depending on how quickly he adapts to a more complex role.

Marshall Jr. earned starting slot work in camp and battles for a top role, with Duck and Jones in the mix. His growth and performance will shape how aggressive Miami can be with rotation, potentially becoming a key piece if injuries persist and the coaching staff trusts his coverage reads.