Zach Sieler

Sieler was born in Pinckney, Michigan as the eldest of three sons. In high school, Sieler was a three-sport athlete. He competed in track and field and amateur wrestling. In wrestling, Sieler was a state championship participant.^[3]

In football, Sieler played as a strong-side defensive end with the Pinckney Pirates.^[4] Sieler served the Pinckney Pirates as team captain and was named Athlete of the Year in his senior class.^[3] Despite standing 6 ft 6 in (1.98 m) and weighing 280 pounds (127 kg), Sieler was considered undersized and was not a highly-rated recruiting prospect. He would later make high school history as the first NFL player from Pinckney High.^[5]

Sieler joined the Ferris State Bulldogs in 2013 as a walk-on.^[5] After redshirting the 2013 season, Sieler joined the field the following season and was part of the playoff squad that won the Great Lakes Intercollegiate Athletic Conference Championship during the 2014 and 2015 seasons. He earned GLIAC's Defensive Lineman of the Year and National Defensive Player of the Year honors during the 2015 and 2016 seasons. His contributions enabled the Ferris State Bulldogs to reach the 2016 NCAA Division II National Semifinals game.^[3] He did not play his senior season, opting instead to enter the 2018 NFL draft.

On April 25, 2025, Sieler's No. 96 was retired by the Bulldogs.^[6] Sieler is one of the two players to have their numbers retired by the program along with Jason Vander Laan, whose number was retired in 2022.^[7]

Sieler was selected by the Baltimore Ravens in the seventh round (238th overall) of the 2018 NFL draft.^[10]

On August 31, 2019, Sieler was waived by the Ravens and was signed to the practice squad the next day.^[11] He was promoted to the active roster on October 5.^[12] Sieler was waived on December 4.^[13]

On December 5, 2019, Sieler was claimed off waivers by the Miami Dolphins.^[14]

On April 17, 2020, Sieler was re-signed to a one-year contract by the Dolphins.^[15] He was placed on the reserve/COVID-19 list by the team on July 31, 2020,^[16] and was activated six days later.^[17]

On November 16, 2020, the Dolphins signed Sieler to a three-year contract extension through the 2023 season.^[18]

On August 27, 2023, Sieler signed a three-year, $38.65 million contract extension with the Dolphins.^[19] During the Dolphins' Week 14 loss to the Tennessee Titans, Sieler recorded his first career interception off of quarterback Will Levis, and returned it 5 yards for his first regular-season NFL touchdown.^[20]

In 2023, Sieler had 10 sacks which ranked him second on the team.^[21]

In Week 14 of the 2024 season, Sieler recorded four tackles and two sacks in a 32–26 win over the New York Jets, earning AFC Defensive Player of the Week.^[22]

On August 3, 2025, Sieler signed a three-year, $64 million contract extension with the Dolphins.^[23]

In Week 3 of the 2025 season, Sieler committed a roughing the punter early in the fourth quarter of a tie game against the Buffalo Bills. Buffalo scored a touchdown on the ensuing drive and went on to win by ten points.^[24]