Career
At the Olympics she competed as Mission Howard in 1984, as Mistress Howard-Hill in 1988, and as Mistress Hill in 1992. The team set the current standing American Record in the event, which is still the second best time ever run behind the winning Soviet team in that race.
That distance is now rarely run as the NFHS converted to metric distances, so the record still stands today.
Later teams with Denean broke the record for the slightly shorter 4x400 metres relay, after sister Atra graduated and the rest of the family moved to Kennedy High School (Los Angeles). Her 1982 52.39 was the NFHS national high school record for eighteen years, before it was beaten by Monique Henderson.
At age 15, she qualified for the ill-fated 1980 United States. Olympic Team which was part of the 1980 Olympic Boycott finishing behind sister Sherri at the United States Olympic Trials (track and field), the first sisters to make the Olympic team simultaneously in the same event. She is currently an assistant coach at the College of the Canyons.