He started at left tackle his junior and senior years as the team went 26–3 and won the 2007 Georgia High School Association Class AAA state championship.

[1] Hubbard played for the UAB Blazers of the University of Alabama at Birmingham from 2009 to 2012.

On October 9, 2016, he received his first career start against the New York Jets after right tackle Marcus Gilbert was unable to play due to injury.

He received a lot of praise for his performance from coaches Mike Tomlin, Todd Haley, and quarterback Ben Roethlisberger.

On September 24, 2017, Hubbard received his first start of the season in place of right tackle Marcus Gilbert, who was out with an injured hamstring.

[13] Hubbard was placed on injured reserve on December 22, 2020, as a result of a knee injury he sustained during the Browns' Week 15 matchup.

[21] On October 18, 2024, Hubbard was signed by the New York Giants off the 49ers practice squad.