Denver Broncos
The Denver Broncos selected Chubb in the first round with the fifth overall pick in the 2018 NFL Draft. Chubb was the first defensive end drafted in 2018. On June 21, 2018, the Broncos signed Chubb to a fully guaranteed four-year, $27.27 million contract that includes a signing bonus of $17.91 million.
Chubb entered training camp slated as a starting outside linebacker. Head coach Vance Joseph named Chubb and Von Miller the starting outside linebackers to begin the regular season. They started alongside inside linebackers Todd Davis and Brandon Marshall.
He made his professional regular season debut and first career start in the Broncos' season-opener against the Seattle Seahawks and recorded three combined tackles and was credited with half a sack during a 27–24 victory. He made his first career sack with teammate Darian Stewart on Seahawks' quarterback Russell Wilson for a six-yard loss during the first quarter. In Week 3, he recorded two solo tackles and made his first career solo sack on Ravens' quarterback Joe Flacco during a 27–14 loss at the Baltimore Ravens. On October 14, 2018, Chubb recorded five combined tackles and made a season-high three sacks on quarterback Jared Goff as the Broncos lost 23–20 against the Los Angeles Rams. The following week, he made three solo tackles, two sacks, and made one forced fumble by quarterback Josh Rosen during a 45–10 win at the Arizona Cardinals in Week 7. For his efforts, Chubb was named NFL Defensive Rookie of the Month for October. In Week 11, he collected season-high seven combined tackles and made one sack during a 23–22 win at the Los Angeles Chargers. He started in all 16 games in 2018 and recorded 60 combined tackles (41 solo), 12 sacks, two forced fumbles, and one pass deflection. He was named to the PFWA All-Rookie Team. He was ranked 82nd by his fellow players on the NFL Top 100 Players of 2019.
During Week 4 against the Jacksonville Jaguars, Chubb recorded his first sack of the season on Gardner Minshew in the 26–24 loss.
At one point, Chubb left the game due to an injury but briefly returned. Later on, it was reported that Chubb had suffered a partial tear of the ACL in his left knee, which prematurely ended his 2019 season.
In Week 4 against the New York Jets, Chubb recorded his first 2.5 sacks of the season on Sam Darnold during the 37–28 win.
On December 21, 2020, Chubb was voted to the 2021 Pro Bowl. In the 2020 season, Chubb appeared in and started 14 games, he finished with 7.5 sacks, 42 total tackles (26 solo), and one forced fumble. He was ranked 40th by his fellow players on the NFL Top 100 Players of 2021.
The Broncos exercised the fifth-year option on Chubb's contract on April 30, 2021, with a guarantee salary of $12.72 million for the 2022 season. He was placed on injured reserve on September 22, 2021, after undergoing ankle surgery. He was activated on November 27. He appeared in and started seven games and had 21 total tackles (nine solo), one interception, and two passes defended.
