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Corey Matthaei enters his 12th season with the Chiefs and seventh as the team's assistant offensive line coach in 2024.

Corey Matthaei enters his 12th season with the Chiefs and seventh as the team's assistant offensive line coach in 2024.

In 2023, Matthaei assisted the offensive line to another productive year with two key new faces in LT Donovan Smith and RT Jawaan Taylor. The line continued their strong interior with C Creed Humphrey, G Trey Smith and G Joe Thuney. The unit allowed just 28.0 sacks, the second fewest in the league and allowed no sacks in the Wild Card and Divisional Round Games en route to their second-consecutive Super Bowl win (LVII and LVIII). With Matthaei's assistance, the front cleared the way for RB Isiah Pacheco's standout season with 205 rushes for 935 yards and seven endzone trips. Pacheco had three 100+ rushing yard games (Weeks 4, 13 and 17). Humphrey and Thuney were both selected to the Pro Bowl while Thuney was also selected to the PFW/PFWA All-NFL Team and the AP All-Pro Team (first-team). Matthaei continues to coordinate the team's screen game and is responsible for preparing the opponent blitz package. He also works closely with Offensive Line Coach Andy Heck to formulate the short-yardage and goal line run and pass game.

In 2022, Matthaei worked closely with the Chiefs offensive line that helped the Chiefs offense lead the league in passing yards (5,250), yards per play (6.43), yards per game (413.6) and points per game (29.2). With a line highlighted by second-year linemen C Creed Humphrey and G Trey Smith and returners T Orlando Brown and G Joe Thuney, the 2022 offensive front allowed just 26.0 sacks through the regular season (third in NFL), recorded six games with no sacks and despite the Eagles leading the league in sacks in 2022, the Chiefs front allowed no sacks during the Super Bowl LVII win. With Matthaei's guidance, the offensive line helped rookie RB Isiah Pacheco total the fifth-most rushing yards in a Chiefs rookie campaign with 830 yards and five touchdowns. Three offensive linemen (Humphrey, Brown and Thuney) were named to the 2022 Pro Bowl. Matthaei coordinated the Chiefs screen game and was responsible for preparing the opponent blitz package, and also worked closely with offensive line coach Andy Heck to formulate the short-yardage and goal line run game.

For the 2021 season, Matthaei helped a group of veterans and rookies merge into an offensive line that only allowed 28.0 sacks on QB Patrick Mahomes, which was tied at third for the season. Prior to the season, Brown joined the club via trade with the Ravens, and following the season, he earned his third Pro Bowl nomination. Rookie offensive linemen Humphrey and Smith started all 17 regular season games in 2021, becoming the 17th and 18th players in franchise history to start all regular season games in their rookie season.

In 2020, Matthaei helped lead an offensive line that was marred by injuries, seeing 12 different starters at various positions along the line throughout the season while still ranking fifth in sacks allowed with 24.0.

In 2019, Matthaei assisted an offensive line unit that finished tied for third in the NFL in sacks allowed with 25.0 in the regular season on their way to defeating the San Francisco 49ers in Super Bowl LIV.

In his first year as the assistant offensive line coach, he helped lead a group that blocked for NFL MVP QB Patrick Mahomes. The offensive line only allowed 26.0 sacks in the regular season and paved the way for 1,855 yards rushing as a team.

Prior to the 2018 season, Matthaei served as the team's assistant quarterbacks coach from 2015 to 2017. In addition to tutoring the quarterbacks, Matthaei assisted Offensive Line Coach Andy Heck. Before being promoted in 2015, Matthaei was an offensive quality control coach for two seasons with the team (2013-14). In the five seasons Matthaei worked alongside QB Alex Smith (2013-17), Smith recorded five consecutive seasons passing for 3,000 yards and became the franchise's all-time leading rusher among QBs after the 2017 season (1,672 yards). In 2013, Matthaei assisted an offensive staff that propelled the Chiefs to the single best season turnaround in franchise history, winning 11 games after a 2-14 season.

Prior to his move to Kansas City, Matthaei served three seasons under Chiefs Head Coach Andy Reid with the Philadelphia Eagles as the assistant to the head coach from 2009-12 after completing two seasons with the Eagles as a coaching assistant (2008-09). He spent 2006-07 as Philadelphia's football operations intern for training camp.

Before embarking on his NFL career, Matthaei played on the offensive line at Willamette University in Salem, Ore., (2003-06). Upon graduating, he spent one season as the offensive assistant at his alma mater.

Education: ­Willamette University (B.A. 2007). Born: Fircrest, Wash. Family: Wife - Cari; Children - Taylor, Brayden and Kacey.