He is most recognized for his supporting roles in the films Butch Cassidy and the Sundance Kid (1969) and The Sting (1973) and the television series Police Woman (1974-1978).
[2] Dierkop dropped out of high school after his junior year and enlisted in the U.S. Marine Corps.
[2] Dierkop was cast in two George Roy Hill films, and played an outlaw both times — as "Flat Nose Curry" in Butch Cassidy and the Sundance Kid (1969), he played a member of the Hole in the Wall Gang,[4] and as "Floyd" in The Sting (1973), he acted as a bodyguard with Lee Paul to Robert Shaw's New York gangster/griftee, Doyle Lonnegan.
[6] Dierkop appears briefly in the music video of "Man on the Moon", a hit song by the American alternative rock band R.E.M.
[1][8] On February 25, 2024, Dierkop died at the age of 87 from complications of pneumonia and a heart attack at Sherman Oaks Hospital in Los Angeles.