[1] He was the offensive coordinator at Ohio Dominican University from 2019 to 2021 and the quarterbacks coach at Auburn during the 2022 season.

Both he and his older brother Brian,[2] who is a former NFL wide receiver and current offensive coordinator at Ohio State, played football at GlenOak High School in Canton.

In Kentucky's game against Middle Tennessee State University on September 13, Hartline completed 28 of 47 passes for 254 yards with two touchdowns and no interceptions.

[5] He completed 32-of-42 passes for 4 touchdowns and 349 yards during a win against the University of South Carolina in October 2010, rallying the team from a 28–10 halftime deficit.

[8] Hartline was signed by the Indianapolis Colts as an undrafted free agent following the 2011 NFL draft on July 26, 2011.

After his playing career ended, Hartline worked as an account executive for the Miami Dolphins before being hired by Ohio State in 2015 as a quarterback coach intern.

[13] Hartline was hired by the Coastal Carolina Chanticleers football team as an offensive analyst for the 2024 season.