Zachary William-Jacob Allen Bio
Zachary William-Jacob Allen is an American professional football defensive end who currently plays for the Denver Broncos of the National Football League. Born on August 20, 1997, in New Canaan, Connecticut, Allen established himself as one of the league’s premier defensive linemen through his exceptional production and durability. After beginning his career with the Arizona Cardinals following his selection in the 2019 NFL Draft, Allen joined the Broncos in 2023 and has since earned Second-team All-Pro honors in 2024 and Pro Bowl recognition in 2025. His journey from a productive college player at Boston College to a cornerstone of Denver’s defense exemplifies his sustained excellence at the professional level.
Early Life and Background
Allen grew up in New Canaan, Connecticut, where he attended New Canaan High School. His upbringing in the competitive athletic environment of Connecticut prepared him for the rigors of collegiate football. Allen’s combination of size, athleticism, and football IQ made him a highly regarded prospect as he transitioned from high school to the next level of his career.
His performance at the high school level positioned him for opportunities at the collegiate programs throughout the Northeast and Mid-Atlantic regions, ultimately leading him to Boston College where he would develop into a NFL-caliber talent.
Path to Professional Football
Allen enrolled at Boston College in 2015, joining the Eagles football program under the direction of the coaching staff. As a freshman, he appeared in all 12 games of the regular season, primarily contributing on special teams while also seeing action at defensive end. His first collegiate tackle came in the season opener against Maine, establishing the foundation for what would become a decorated college career.
Throughout his four seasons at Boston College from 2015 to 2018, Allen steadily improved his production and became a defensive cornerstone for the Eagles. He demonstrated versatility and consistency, recording significant tackle and sack totals each year while developing into a complete defensive end capable of stopping the run and pressuring quarterbacks.
Zachary William-Jacob Allen Career
Arizona Cardinals (2019–2022)
Allen entered the NFL as a third-round selection, chosen by the Arizona Cardinals with the 65th overall pick in the 2019 NFL Draft. Following training camp, he was immediately named a starting defensive end for the season opener. Allen made his professional debut in Week 1 against the Detroit Lions, recording three solo tackles in the contest. His rookie campaign encountered adversity when he suffered a neck injury in Week 4, forcing him to miss the next six games. He was subsequently placed on injured reserve on November 13, 2019, limiting him to just four appearances in his inaugural season.
The 2020 season marked Allen’s first full healthy campaign, and he recorded his first career sack during the Week 1 victory over the San Francisco 49ers, bringing down quarterback Jimmy Garoppolo. He continued to contribute throughout the season before being placed on injured reserve again in late October. Allen returned to action later that year and logged a standout performance in Week 15 against the Philadelphia Eagles, leading the team with 11 tackles while recording a sack against Jalen Hurts during the 33-26 win.
Allen emerged as a consistent starter during the 2021 and 2022 seasons with Arizona. In 2021, he played 15 games with 14 starts, accumulating 48 tackles, four sacks, and three fumble recoveries. His production continued to climb in 2022, as he logged 47 tackles, five and a half sacks, ten tackles-for-loss, and eight pass deflections across 13 starts. Allen credited much of his development during these seasons to the mentorship of three-time Defensive Player of the Year recipient J.J. Watt, who served as his teammate with the Cardinals from 2021 to 2022.
Denver Broncos Era (2023–Present)
On March 15, 2023, Allen signed a three-year, $45.75 million contract with the Denver Broncos, reuniting with former Cardinals defensive coordinator Vance Joseph. He assumed the starting left defensive end role previously held by Dre’Mont Jones and immediately made an impact in his inaugural season with the Broncos. Allen recorded 60 tackles, eight tackles-for-loss, five sacks, and forced a fumble, establishing himself as a reliable anchor on Denver’s defensive line.
The 2024 season represented Allen’s breakthrough year at the highest level. He delivered a dominant performance, recording 8.5 sacks, 15 tackle-for-losses, and a safety while earning Second-team All-Pro recognition. Allen joined an elite group of players including Nick Bosa, Aaron Donald, J.J. Watt, and T.J. Watt as the only players to ever record 40 or more quarterback hits in a single season. His durability set him apart from peers, as he led all defensive linemen in the league with 964 defensive snaps played, over 100 snaps more than the next closest player. Following his exceptional campaign, Allen earned the 90th rank on the NFL Top 100 Players of 2025, voted on by his fellow players.
On August 2, 2025, Allen signed a landmark four-year, $102 million contract extension with the Broncos, solidifying his status as a foundational piece of Denver’s defense for years to come.
Driving Style and Strengths
Allen possesses exceptional combination of size, power, and stamina that allows him to dominate in multiple facets of defensive end play. His ability to maintain high performance snap after snap sets him apart, as evidenced by his league-leading snap count among defensive linemen. His hand technique and leverage allow him to disengage from blockers effectively, while his football instincts enable him to read plays and make tackles in the backfield.
Notable Events and Milestones
Allen reached several significant career milestones during his tenure with the Broncos. The 2024 season saw him achieve career-high numbers across multiple categories while earning his first major postseason recognition. His selection to the Pro Bowl in 2025 following his contract extension represented the culmination of his rise from a third-round rookie with injury setbacks to one of the NFL’s most respected defensive ends.
Zachary William-Jacob Allen Career Wins
Allen has accumulated impressive statistics throughout his NFL career, demonstrating consistent growth and production year over year. His versatility as both a run defender and pass rusher has enabled him to post strong numbers across all relevant categories while remaining available for the majority of his team’s defensive snaps.
NFL Highlights
Through six professional seasons, Allen has recorded 297 total tackles, 32 sacks, 23 pass deflections, and one defensive touchdown. His sack production has increased each season with the Broncos, reaching 8.5 sacks in 2024. His 2024 campaign stands as his most decorated, as he earned Second-team All-Pro honors while leading the league’s defensive linemen in playing time. The 2025 Pro Bowl selection marked his first postseason recognition since entering the league, validating his status among the league’s elite at his position.
College Achievements
Allen starred for four seasons at Boston College, where he earned Second-team All-ACC honors and the Nils V. “Swede” Nelson Award in 2018. His senior season saw him record a career-high 6.5 sacks and 15 tackles for loss while also forcing his first career fumble. He was recognized as the Atlantic Coast Conference Defensive Lineman of the Week following a career-high 14-tackle performance against Virginia Tech during his junior year.
| Stat | Career Total |
|---|---|
| Total Tackles | 297 |
| Sacks | 32 |
| Pass Deflections | 23 |
| Fumble Recoveries | 3 |
Zachary William-Jacob Allen Family
Family Background and Racing Lineage
No publicly verified information regarding Allen’s family background or racing lineage is available from the provided sources. While his athletic career demonstrates clear dedication to football, specific details about his family connections to athletics remain unverified.
Personal Life
Allen maintains an active presence on social media platforms, connecting with fans through his official accounts. His professional trajectory from a third-round draft pick facing early injuries to one of the league’s highest-paid defensive players reflects his commitment to continuous improvement and excellence in his craft.
2025 Season Performance
The 2025 season marks a pivotal chapter in Allen’s career as he enters his third season with the Broncos following his historic contract extension. Having earned Pro Bowl recognition and First-team All-Pro honors in 2025, Allen enters the campaign as a established leader on Denver’s defensive unit. His partnership with the coaching staff, particularly his rapport with the defensive coordinator, continues to drive his performance on the field.
Allen returns as the anchor of Denver’s defensive line, with expectations that his consistent presence and high snap count will continue to generate pressure on opposing quarterbacks. The Broncos defense looks to build upon its 2024 foundation with Allen serving as a primary force in their front seven. His ability to remain healthy and available for near-every-down duty positions him as one of the most valuable players on the roster heading into the 2025 season.
The trajectory of Allen’s career suggests continued prominence in the years ahead, with the $102 million extension providing both financial security and organizational commitment to his long-term development within the Broncos’ system.