Philadelphia Eagles Williams was selected by the
Philadelphia Eagles in the third round (73rd overall) of the
2021 NFL draft. On June 3, 2021, Williams signed his four-year rookie contract with the Eagles. During his rookie season in 2021, Williams played in all 17 games, contributing as a depth piece behind veterans like
Fletcher Cox and
Javon Hargrave. On October 31 Williams recorded his first ever sack on
Jared Goff to go along with a career high 4 tackles during a 44–6 victory. He finished the year with 30 total tackles, six tackles for loss, two sacks, and six quarterback hits. In 2022, Williams continued to develop and played an important role in a dominant Eagles defense that helped the team reach
Super Bowl LVII. Williams improved his production, recording 36 tackles, nine quarterback hits, and four sacks. In the Super Bowl, Williams recorded one tackle but the Eagles lost 38–35 to the
Kansas City Chiefs. By the 2023 season, Williams had solidified himself as a crucial part of the defensive line rotation. With increased snaps and greater responsibility, he maintained his reputation as a disruptive interior lineman. Williams steady growth continued to make him a valuable asset to the Eagles' defensive front. In 2024, Williams remained a key contributor, further refining his technique and impact on the field. With the retirement of Fletcher Cox, Williams saw increased snaps throughout the year. Williams had two sacks and forced and recovered a fumble in the 40–22 win over the Chiefs in
Super Bowl LIX.
New England Patriots On March 13, 2025, Williams signed a four-year, $104 million contract with the
New England Patriots. The contract made Williams the highest-paid Patriots player ever, in terms of annual salary. On September 14 in Week 2 against the
Miami Dolphins, Williams recorded two sacks, including the game-sealing sack on Dolphins quarterback
Tua Tagovailoa on fourth down in the fourth quarter in the 33–27 win. On November 13 in Week 11 against the
New York Jets, Williams exited the game in the first quarter after suffering an ankle injury. Two days later, Williams was placed on injured reserve. He was activated on January 3, 2026, ahead of the team's Week 18 matchup against the Dolphins. He finished the 2025 season playing in 12 games, recording 29 tackles, 14 tackles for loss, and 3.5 sacks. In the
Wild Card Round against the
Los Angeles Chargers on January 11, 2026, Williams recorded a crucial sack on Chargers quarterback
Justin Herbert late in the fourth quarter to help seal the victory in the 16–3 game, finishing the game with three tackles and two sacks. In the
AFC Championship on January 25 against the
Denver Broncos, Williams recorded eight quarterback pressures on Broncos quarterback
Jarrett Stidham as the Patriots would win 10–7, advancing
Super Bowl LX and Williams' third Super Bowl appearance. Williams recorded a sack in Super Bowl LX, a 29–13 loss to the Seattle Seahawks. ==NFL career statistics==