In his junior and senior year at West Potomac High School, Blewitt was ranked as one of the top kickers in his class.

[1] He was offered a scholarship by the University of Pittsburgh in June 2012 following a standout performance at the Panthers' specialist camp.

[6][7] He was promoted to the active roster after their previous kicker, Dustin Hopkins, was released on October 20,[8] but was waived on November 9 after getting three field goal attempts blocked over two weeks.

[11][12] Blewitt signed with the Pittsburgh Maulers of the USFL on April 27, 2023, and was subsequently placed on the team's inactive roster.

[13] He made his USFL debut on April 30 against the Philadelphia Stars and tied a league record with five field goals in the Maulers' first win of the season.