He started playing football his freshman year and was immediately put on the varsity team.

[2] That year, he not only participated and excelled in football but also did shot put and discus on the PHUHS track and field team.

[2] As a senior, he recorded 65 tackles and eight sacks, as well as a blocked kick, earning first-team all-county and District Player of the Year honors.

[3] Not only was he a powerhouse on the field but also graduated Palm Harbor University High School with 3.8 GPA and a member of the National Honor Society.

[2] In 2005, following his high school career, Larsen attended North Carolina State University.

In 2008, prior to his junior season, Larsen moved to the center position and was named to the Rimington Trophy watch list.

[9] However, in September 2010, he was waived by the Patriots and was claimed by his hometown team, the Tampa Bay Buccaneers.

[12] He started at left guard beginning in the sixth game, replacing the soon-to-be released Keydrick Vincent.

During the 2011 season, Larsen appeared in all 16 games, of which he started three, for the Buccaneers while rotating between guard and center.

In 2012, he appeared in all 16 games again and started 13 at the center position while being part of an offensive line that helped rookie running back Doug Martin rush for 1,454 yards and quarterback Josh Freeman throw for 4,065 yards, which were career high and franchise records.

[9] And his career highlights include his NFL debut in 2010 against the St. Louis Rams and the 16th game of that year against Seattle, where he helped the offense rush for 439 yards, which was the season-high for 2010, and earned the offensive line Madden Most Valuable Protectors honors for Week 16.

On December 9, 2018, Larsen made a crucial block in the Miracle In Miami nearly 40 yards past the line of scrimmage.

"[32] While with the Buccaneers, he has helped with the Metropolitan Ministries preparing food and spending time with children, volunteered his time with the Buccaneers' annual Halloween Celebrations, distributed food for Thanksgiving, sang for hospital patients during the holidays, and surprised single mothers with gifts during the Christmas holiday.