Klachko transferred to Illinois in fall 2012 after redshirting during his freshman season at Nebraska in 2011. In Oct. 2012, Klachko retired from football after suffering multiple concussions.
Coming out of high school, Klachko was a four-star recruit and was ranked among the top 15 offensive guards in the country by both Rivals.com and Scout.com. Rivals.com listed him among the top 10 players in the state of Illinois and among the top 250 overall prospects in the nation.
The 6-4, 290-pound Klachko was a standout for Coach Ken Leonard at Sacred Heart-Griffin High School in Springfield, Ill. As a senior, Klachko earned Chicago Tribune all-state and Central State Eight all-conference honors after helping the team average 44.6 points per game en route to an 8-2 record and a trip to the Class 5A state playoffs. As a junior, Klachko's play helped Sacred Heart-Griffin to a perfect regular season, an 11-1 overall record and a trip to the Class 5A quarterfinals.