Preseason stock shifts center on a handful of rookies making the jump toward real-season roles. Isaac TeSlaa exploded for Detroit, hauling in 10 balls for 146 yards with three touchdowns and earning an elite 84.0 PFF receiving grade, signaling regular-season snaps behind a crowded WR corps. Jaxson Dart’s hot preseason pushed him into Week 1 consideration for New York, while Walter Nolen’s calf situation for Arizona echoes last year’s Darius Robinson saga. Dylan Fairchild is rising for Cincinnati as a potential starter, with notable injuries and depth elsewhere shaping how soon these players become fantasy factors.

others such as Maxwell Hairston (Buffalo), Darius Robinson (Arizona), and Lathan Ransom (Carolina) are watched for health and role changes, while Kenneth Grant (Miami) could lock into a front that shapes the defensive line. Tyler Shough’s stock-down note adds a veteran caution flag to the mix. Overall, the preseason produced a clearer path for late-round darts and dynasty stash candidates as rosters settle.

Miami’s rookie-heavy plan is real: as many as four newcomers could start Week 1 and seven may contribute on opening day. Ollie Gordon II flashed in the final preseason, taking advantage of injuries to De’Von Achane and Jaylen Wright and piling up 126 yards on 26 attempts while also delivering solid pass protection against blitzes. Kenneth Grant, Jonah Savaiinaea, and Jason Marshall Jr. are being asked to contribute early, with Quinn Ewers pushing for more opportunities behind Tua Tagovailoa. It’s Dolphins 101 all August: stack good days, develop the young core, and hope the class delivers.

Eric Rogers’ breakout with the Chargers headlines the preseason, posting a 97.0 PFF overall grade — the top mark among defenders — and leading in coverage (95.3) and run defense (92.6). Chicago-born undrafted players have a real platform to push for roster spots, but Rogers’ play makes a compelling case for immediate IDP fantasy attention and a possible late-season rise in snaps if he maintains his form.

Patriots rookies Will Campbell and TreVeyon Henderson plus undrafted Efton Chism III are turning heads in New England, flashing enough to spark Week 1 fantasy chatter. Campbell’s strong run-blocking and pass protection grades, Henderson’s explosive touches, and Chism’s route-running and contested catches paint a clear path to early involvement, especially in New England’s dynamic offensive scheme which could vault them into valuable depth-chart roles for fantasy managers.

Elsewhere, Gunnar Helm, Grey Zabel, Willie Lampkin, Andrew Mukuba, Jay Higgins, Kenneth Grant and Austin Booker emerge as notable preseason standouts, underscoring the value of chasing sleepers who could contribute in 2025. If these trends hold, fantasy players might add affordable, high-upside pieces late in drafts, while roster decisions in late August could tilt the depth charts toward these names as the regular season approaches.