O'Brien has extensive experience working with Belichick as the pair worked together from 2007-11. He's worked with receivers and quarterbacks in the pros and spent time as offensive coordinator under Belichick, while together the pair won four division championships and two AFC Championships.
The Patriots offense finished 26th in the league in yards per game and 17th in points per game with co-offensive coordinators Matt Patricia and Joe Judge. Hiring O'Brien to fix the offense gives Belichick a trusted mind that can get the most out of third-year quarterback Mac Jones.
The New England Patriots traveled to face their division opponent the New York Jets. The major question coming into the game revolved around which of the two New England quarterbacks would win the position battle taking place at the position.
He helped Alabama capture two national championships during his tenure with the Tide and was named First Team All-SEC in 2019. He amassed 193 tackles with 14.5 sacks and registered one defensive touchdown.