Sundberg attended the University of California, Berkeley, where he played in 52 consecutive games and served as the long snapper for his entire four-year college career.

He won the starting job in preseason as a true freshman and served as the long snapper on field goals and punts in all 13 games all four years at Cal.

Washington signed veteran free agent, James Dearth, after Week 1 of the pre-season who Sundberg subsequently beat out for the team's long snapper position.

[13] Originally set to become a restricted free agent for the 2013 season, Sundberg agreed to a four-year contract to stay with the Redskins on March 10, 2013.

[18] In 2019, after recovering from a back surgery Sundberg played in all 16 games and helped punter Tress Way reach the Pro Bowl.

[19] In the 2021 offseason, Sundberg announced that head coach Ron Rivera informed him that Washington would not sign him to a contract extension.

[21] Sundberg, with the Redskins Charitable Foundation, helped fund and start the Loads of Love program in the DC, Maryland, and Virginia area.