New England Patriots Onwenu was selected by the
New England Patriots in the sixth round (182nd overall) of the
2020 NFL draft. During the early portion of his rookie season, Onwenu played across the offensive line after injuries affected the normal lineup; Onwenu took snaps as a sixth offensive lineman/jumbo
tight end, at right tackle, and at both guard positions. After starting the first two games as a sixth offensive lineman, Onwenu made his first career start at left guard against the
Las Vegas Raiders. He helped the Patriots amass 250 rushing yards in a 36–20 victory. Despite alternating between guard and tackle, Onwenu finished the year ranked as one of the best offensive linemen in the NFL and started in all 16 of the Patriots' games. He was named to the PFWA All-Rookie Team. For the 2021 season, following the departure of left guard
Joe Thuney and the acquisition of right tackle
Trent Brown, Onwenu moved to left guard. However, Onwenu struggled and was benched in favor of backup guard
Ted Karras; the former finished the season as a backup guard and was often used as a sixth offensive lineman. The 2022 season was a bounce-back season for Onwenu; he was moved to right guard when first-round rookie
Cole Strange was named starting left guard, and Karras had signed with the
Cincinnati Bengals. Onwenu impressed at the position, being
PFF's No. 4 ranked guard. He finished the season playing in 17 games, all of which he started in. For the 2023 season, Onwenu was named starting right tackle after
Isaiah Wynn signed with division rival
Miami Dolphins; fourth-round rookie
Sidy Sow took over as the starting right guard. On March 14, 2024, Onwenu signed a three-year, $57 million contract extension with the Patriots. After starting the first four games at right tackle, Onwenu switched back to right guard due to multiple injuries to the offensive line. He started in Super Bowl LX, a 29–13 loss to the Seattle Seahawks. ==Personal life==