Considered the greatest player ever to come out of Granger High School, Bartosh was dubbed the "Granger Ghost."[2] He starred at Granger from 1945 to 1948, then played three varsity seasons with the TCU Horned Frogs football program. At TCU, he played quarterback under coach Dutch Meyer and led the Southwest Conference in total offense during 1951, his junior season. In 1952, however, he had to take a backseat behind Ray McKown. Bartosh was selected by the Baltimore Colts as the 314th pick (round 27) of the 1952 NFL draft, but never played in the NFL. He did play in the Canadian Football League (CFL) for the British Columbia Lions in 1955, leading the team in touchdowns.
After suffering a shoulder injury during one of his practices, Bartosh quit professional football and started his coaching career. Bartosh was the head football coach at Milby High School in Houston, Texas, from 1959 to 1961, winning two District Championships. In 1962, he became head coach at the newly opened Lee High School, Houston, serving there through the 1966 season. His 1964 and 1965 teams were zone champions. After a three-year stint as assistant at Rice University, he became head coach at Permian High School in Odessa, Texas, in 1971. Bartosh guided Permian to an undefeated 14–0 season in 1972, winning the Texas 5A state championship as well as the mythical high school football national championship along the way. He then left Permian for an assistant coaching job under Emory Bellard at Texas A&M University. In 1974, he succeeded Tommy Hudspeth as head coach at the University of Texas at El Paso (UTEP).
Bartosh was inducted into the Texas High School Football Hall of Fame in 1989. He died on June 4, 2016, in Liberty Hill, Texas, where he lived.[3]