Zach Sieler

Miami Dolphins

Pos IDL

Updated October 8, 2026

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Model Score

89.8 MODEL

2020

84.0

2021

73.7

2022

85.8

2023

99.0

2024

94.2

2025

85.4

2026

89.8

How good he is at what he is supposed to be doing, out of 100. Not a projection of what he will do next, and not a read on his contract. Median is about 70, and a 95 is rare. How it is built →

STM Take

Tier 2 (#12) breakout in 2022 plus the Ferris State Division II 7th-round origin plus eight years of NFL survival puts Sieler in the rarest outlier-positive draft-slot-vs-outcome class at the interior defender position. The Dolphins anchor reps plus the multi-year mid-prime production give him real veteran value. The 2026 question is whether Sieler returns to tier 4 territory or whether the structural late-career decline reasserts.

Sieler came out of Ferris State (Division II) as the Baltimore Ravens' 7th-round pick (238th overall) in 2018 and has anchored the Miami Dolphins' interior since 2020. His STTM career runs tier 6 (#41) in 2019, tier 4 (#31) in 2021, tier 2 (#12) breakout in 2022, and tier 5 (#34) in 2025.

Strengths

2022 tier 2 (#12) STTM peak as a Ferris State Division II 7th-round pick puts him in the most outlier-positive draft-slot-vs-outcome class at the position.
Eight years of NFL survival as a 238th overall pick gives him the rarest journeyman elite-peak résumé at the position.

Concerns

22-spot regression from tier 2 (#12) in 2022 to tier 5 (#34) in 2025 confirms the structural ceiling has compressed.
Miami's broader defensive identity around the Tua Tagovailoa offensive instability puts continued Sieler production partly outside his control.

What to watch: Whether Sieler returns to tier 4 (top 30) in 2026, the threshold for confirming the structural ceiling can climb again.