He spent his entire NFL career with Washington, playing for the Redskins, Football Team, and Commanders from 2017 through 2022, retiring after the 2022 season due to injuries.

[1] A 2-star offensive guard recruit, Roullier committed to Wyoming to play college football over offers from Akron, Northern Iowa, Toledo, and Western Michigan.

As a redshirt sophomore in 2014, Roullier started all 12 games at left guard and was named Honorable Mention All-Mountain West.

[3] He moved from left guard to center for his redshirt senior season, where he was named first-team All-Mountain West, helping lead Wyoming to the conference championship game.

[10] In the Week 8 game against the Denver Broncos, he was carted off the field after fracturing his fibula in the second quarter and was placed on injured reserve on November 2, 2021.