He played college football at North Carolina and was signed by the Kansas City Chiefs as an undrafted free agent in 2008.

Barth has been a member of the Miami Dolphins, Denver Broncos, Tampa Bay Buccaneers, New Orleans Saints and the Chicago Bears.

He currently holds the highest field goal percentage in Buccaneers franchise history, a record he achieved during the 2011 season.

He is also the most accurate kicker in Buccaneers history, converting 83.8 percent of his field goal attempts (114-of-136) with the club.

[2] Barth is currently a real estate agent for Intracoastal Realty in Wilmington, North Carolina.

In a game against North Carolina State, Barth made a 54-yarder that was his career best and tied for the second-longest in school history.

[4] In 2007, as a senior, Barth made 19 of 22 field goals and 30 of his final 33 attempts, dating back to his sophomore season.

[4] Against Miami, Barth kicked a career-high four field goals in the 33–27 win and was named the ACC special teams player of the week.

[6] Barth failed to beat out Nick Novak for the team's placekicking job and was waived by the Chiefs on August 29, 2008.

[16][17] On December 27, 2009, Barth kicked a 47-yard overtime field goal to give the Buccaneers the win over the New Orleans Saints, 20–17.

[19] In Week 5 of the 2010 season, Barth kicked a 31-yard field goal with :01 left in the game to give the Buccaneers a 24–21 lead over the Cincinnati Bengals.

[23] In Week 13, Barth went 4-for-4 on field goal attempts, converting from 50, 47, 46, and 44 yards, in the first half against the Carolina Panthers.

[25] Barth the set franchise record with a 92.9 field goal percentage (26–28) in 2011, shattering Steve Christie's 85.2 percent (23–27) in 1990.

[26] On July 17, 2013, Barth was placed on injured reserve and missed the 2013 season with an Achilles injury suffered while taking part in a charity basketball game.

[34] On November 25, 2014, Barth signed with the Denver Broncos after they released their previous kicker, Brandon McManus.

[40] Barth was resigned by Tampa Bay on October 6, 2015, after the team released starting kicker Kyle Brindza.

[48] On September 18, 2016, in Week 2, Barth missed his first field goal attempt with the Bears against the Philadelphia Eagles.

[51] On November 19, during Week 11 against the Detroit Lions, with only eight seconds left in the fourth quarter, Barth missed a 46-yard field goal attempt as the ball went sailing far right.