Education
He played college football at Northern Illinois University and attended Lake Park High School in Roselle, Illinois.
He played college football at Northern Illinois University and attended Lake Park High School in Roselle, Illinois.
He was drafted by the Indianapolis Colts in the fifth round of the 1986 NFL Draft. Kellar participated in high school football and track at Lake Park High School. He was the league discus record-holder and a state meet finalist in shot put.
Kellar played for the Northern Illinois from 1982 to 1985.
He recorded 298 career tackles. Kellar was named Northern Illinois tri-captain and garnered Second-Team All-MAC accolades his senior year in 1985.
Kellar was named to the All-Time Huskie Stadium Team in 1995 and the Huskies" All-Century Team in 1999. He was inducted into the Northern Illinois University Athletics Hall of Fame in 1993.
Indianapolis Colts
Kellar was selected by the Indianapolis Colts with the 117th pick in the 1986 NFL Draft and signed with the team on July 19, 1986.
He played in fourteen games, starting eight, for the Colts during the 1986 season. He played in three games, starting two, for the team in 1987 before suffering a knee injury. Kellar was released by the Colts on August 23, 1988.
Green Bay Packers
Kellar spent some of the 1989 off-season with the Green Bay Packers.
He was released by the Packers on August 3, 1989. Minnesota Vikings
Kellar also spent time with the Minnesota Vikings during the 1989 off-season.
Ottawa Rough Riders
He then retired from football. Kellar was named defensive line coach at the College College of DuPage in 1990 and spent ten years there.
He was the defensive line coach at Western Kentucky University in 1992.
He was named strength and conditioning coach at Bowling Green State University in 2000. Kellar became strength and conditioning coach at the University of Houston in 2001.
He earned Huskies" defensive Most Valuable Player, First-Team All-MAC and Associated Press Honorable Mention All-America honors in 1984. He received the Broderick-Andres Award as outstanding Northern Illinois male student-athlete for the 1985-1986 school year. He was also a two-time winner of the NIU Abe Rosenbloom Lineman Award in 1984 and 1985.
Kellar was also a member of the Green Bay Packers, Minnesota Vikings and Ottawa Rough Riders. Kellar was also a member of the Ottawa Rough Riders in 1989.