Career
Born in London, Reitz competed at the 1980 Moscow Olympics, where he was eliminated in the semifinals. At the 1984 Los Angeles Olympics he finished fifth in the final. He set his personal best in the steeplechase with 8:12.11 on 5 September 1986 at a meet in Brussels.
In the Track and Field News world merit rankings, he ranked in the top 10 three times.
In 1983 (#4), 1984 (#6) and 1986 (#7). His final major competition was the 1987 World Championships, where he was eliminated in the heats.