Zach Sieler

Career StatsB+

Year	Team	GP	Sacks	Tkl	TFL
Career		108	35.5	357	55.5
2025		17	5.5	47	10
2024		15	10.0	55	12.5
2023		17

Current Contract

Contract Value Index (CVI)

The Dolphins locked up a quality interior defender at market rate, making Sieler's three-year, $64M extension ($21.3M AAV) a fair deal that earns a B- CVI. Miami paid above-average starter money for exactly that — an above-average starter who has quietly developed into one of the more consistent defensive tackles in the league over the past two seasons. At 28, Sieler is entering his prime years, and the Dolphins smartly secured him before he could test free agency where his steady production and durability would have commanded similar or higher dollars. The $34M in guaranteed money represents reasonable risk management for a player who has started 31 games over the last two seasons without major injury concerns. While Sieler isn't an elite game-wrecker who merits top-tier DT money, he's exactly the type of reliable, versatile lineman who anchors successful defenses — and Miami paid appropriately for that value. This contract reflects sound roster building, giving the Dolphins cost certainty at a crucial position without breaking the bank for a player who consistently does his job at a high level.

Performance Analysis

Zach Sieler has quietly established himself as one of the NFL's most reliable interior defensive linemen, earning a B+ performance grade through eight seasons and 108 career games with the Miami Dolphins. The undrafted free agent out of Ferris State has defied expectations to become a cornerstone of Miami's defensive front, consistently delivering above-average production in a league where finding quality depth along the defensive line is increasingly challenging. At 30 years old, Sieler represents the type of steady, workmanlike player that championship defenses are built around, even if he doesn't generate the headlines that edge rushers or cornerbacks command. Sieler's current season numbers showcase a player operating at a high level across multiple facets of interior line play, posting 0.32 sacks per game (well above the NFL average of 0.21) while contributing 2.76 tackles per game compared to the league standard of 2.30. His most impressive metric remains his ability to disrupt plays in the backfield, recording 0.59 tackles for loss per game that approaches elite territory (0.65) and demonstrates his knack for penetrating blocking schemes and making game-changing stops. While he may not possess the explosive pass-rush moves of premier three-technique tackles, Sieler's combination of hand technique, leverage, and football IQ allows him to consistently win one-on-one matchups against interior offensive linemen. After posting an A+ grade in 2024 before settling into B-level performance in 2025, Sieler appears to be maintaining his effectiveness even as he enters his thirties, suggesting his cerebral approach to the game can sustain quality production despite any physical decline. His trajectory points toward continued reliability as a starter through at least the next two seasons, with his veteran leadership becoming increasingly valuable as Miami continues building its defensive identity. The key factor to monitor will be whether his tackle-for-loss production can maintain its elite pace, as that disruptive ability separates him from typical rotational interior linemen.

Current Sentiment

Zach Sieler's A- sentiment grade reflects overwhelmingly positive media reception following his massive three-year extension worth $64-67M with the Miami Dolphins, positioning him as a legitimate franchise-caliber defensive tackle. The veteran interior rusher has earned universal praise from coaching staff and analysts alike, with new defensive coordinator Jeff Hafley's public endorsement reinforcing confidence in Sieler's scheme versatility and leadership value. Media outlets consistently highlight his impressive 35.5 career sacks over eight seasons as evidence of elite production that justifies the substantial financial commitment from Miami's front office. However, the A- grade rather than straight A reflects underlying concerns about the Dolphins' organizational direction and Sieler's potentially "precarious position" within an ongoing rebuild that could limit his impact despite individual excellence. The narrative consistently frames Sieler as a cornerstone player whose proven pass-rushing ability and veteran presence make him an invaluable asset, though questions about Miami's competitive timeline create modest uncertainty about maximizing his prime years.