Christian was a starting offensive tackle for Louisville from 2015 to 2017, starting all 39 games of his career since joining the team as a true freshman.[4] After his junior season in 2017, he declared for the 2018 NFL draft.[5] Christian was named an Honorable Mention All-ACC offensive tackle in all three of his seasons at Louisville.[6][7][8]
On January 3, 2018, Christian announced his decision to forgo his senior season and enter the 2018 NFL draft.[11] Christian elected to enter the draft although the NFL's underclass advisory committee told him that he would probably not be selected in the first or second round.[12] Christian attended the NFL Scouting Combine in Indianapolis and chose to only perform the 40-yard dash, 20-yard dash, 10-yard dash, bench press, and positional drills. On March 29, 2018, he participated at Louisville's pro day, but opted to stand on the majority of his combine numbers and only performed the bench press (22 reps). He also attended pre-draft visits and private workouts with the New York Giants, Detroit Lions, and Denver Broncos.[13][14] At the conclusion of the pre-draft process, Christian was projected to be a fourth round pick by the majority of NFL draft experts and scouts.[15] He was ranked the fourth best offensive tackle in the draft by Scouts Inc., was ranked the 10th best offensive tackle by Sports Illustrated, and was ranked the 11th best offensive tackle prospect in the draft by DraftScout.com.[16][17]
Washington Redskins / Football Team
The Washington Redskins selected Christian in the third round (74th overall) of the 2018 NFL draft.[18] Christian was the seventh offensive tackle drafted in 2018.[19] Christian signed his four-year rookie contract, worth $3.74 million, on June 24, 2018.[20][21] He played in two games before suffering a torn medial collateral ligament (MCL) in Week 10 and was placed on injured reserve on November 13, 2018.[22][23]
At the start of the 2020 season, Christian was named the starting left tackle replacing Trent Williams, who was traded to the San Francisco 49ers during the offseason, and Donald Penn, whom the team chose not to re-sign.[24] Christian started the first six games before suffering a knee injury in Week 6. He missed the next three games before being placed on injured reserve on November 19, 2020.[25] Christian was waived on May 20, 2021.[26]
Houston Texans
On May 21, 2021, Christian was claimed off waivers by the Houston Texans.[27]
Kansas City Chiefs
On March 24, 2022, Christian signed a one-year deal with the Kansas City Chiefs.[28] He was waived on January 4, 2023, after Mecole Hardman was activated off of injured reserve.[29]
Miami Dolphins
On January 5, 2023, Christian was claimed off waivers by the Miami Dolphins.[30] Christian signed a one-year contract extension on March 16.[31] He was released on August 28.[32]
Houston Texans (second stint)
On September 27, 2023, Christian was signed to the Texans practice squad.[33] He was released on October 10.[34]
Cleveland Browns
On October 31, 2023, Christian was signed to the Cleveland Browns practice squad.[35] He was signed to the active roster on November 7.[36]
Tennessee Titans
On June 12, 2024, Christian signed with the Tennessee Titans.[37] He was released on August 27.[38]
Los Angeles Rams
On September 11, 2024, Christian signed with the Los Angeles Rams.[39] He was released on October 15 and re-signed to the practice squad two days later.[40][41]
Cleveland Browns (second stint)
On November 19, 2024, Christian was signed to the Cleveland Browns active roster off the Rams practice squad.[42]