Jerry Jones’ “about 30%” turnover framework meets the NFC East’s snap reality

In the lull of the NFL offseason, teams tend to talk in principles, not spreadsheets. But a recent breakdown tied to the Cowboys’ roster-building philosophy grounded those principles in playing-time data, using a simple premise: if a team keeps a core group, it should also keep a large share of last year’s snaps. The measure is directly tied to a framework Jerry Jones described about a decade ago, when he said roster turnover every year is “about 30 percent,” and that the organization’s work is to identify and preserve the “core.”

From there, the analysis turns to raw snap totals. It focuses on how much playing time each NFC East team generated in 2025 on offense, defense, and special teams, and then looks at what percentage of those snaps remain on the 2026 roster. The point is not that every position group changes at the same rate, or that one offseason move can fully predict next year’s performance, but that continuity shows up most clearly where the underlying workload stays stable.

The Cowboys, specifically, illustrate how continuity can be uneven. On the offensive line, the team played 5,938 combined offensive snaps in 2025. According to the report, only Brock Hoffman (474 snaps) and Hakeem Adenji (76) are listed as not returning for 2026 among the group referenced. With that, the returning offensive linemen combined for 5,388 of those 5,938 snaps, yielding a 91 percent carryover of offensive line playing time.

Linebacker, the report notes, has been a different story for Dallas. The Cowboys are described as returning 967 of 2,373 linebacker snaps from 2025, which comes out to 41 percent. In other words, even if the front office is still operating within an overall turnover range, the “core” is not defined by the franchise label alone. It can look like a near-steady base at one position and major change at another.

Across the division, the Eagles’ defensive line is presented as the opposite end of the spectrum. The report states that six defensive tackles combined for 2,520 defensive snaps for Philadelphia in 2025, and that all six are still with the team, resulting in a reported 100 percent return of defensive line snaps. The author adds a caveat around the situation involving Jalen Carter, but the takeaway remains that the Eagles’ most snap-heavy interior run-defense workload appears to be staying intact heading into 2026.

More broadly, the analysis suggests why fans may feel both “continuity” and “turnover” at the same time. If the league’s roster turnover is built into the calendar and not treated as an emergency, a team can still make noticeable personnel changes while preserving the majority of its most repeatable game inputs, like certain offensive groupings or a position group that rarely swings from year to year.

For readers trying to translate this into what to watch next, the snap-carryover method offers a practical lens as training camp approaches. Look for whether position groups with high snap retention become the stabilizing force on game plans, and whether low snap-retention groups drive the most early adjustment. It is also worth watching whether the “30 percent” idea functions more like a ceiling or a baseline, depending on how much change teams make at high-importance roles.

For the Cowboys in particular, the contrast between a 91 percent offensive line snap return and a 41 percent linebacker snap return frames the offseason tension. Continuity can protect protection and timing on offense, while turnover at linebacker can reshape run fits, coverage assignments, and the speed of defensive communication. Whether Dallas’ continuity strategy lands where it matters most will become clearer once the offseason installation phase turns into actual game reps. The numbers here provide a starting point, not a finished verdict.