Dennis "Denny" Hill is a hall-of-fame swim coach who coached at Pioneer High School (Ann Arbor, Michigan) for 46 years (1969-2014 Men's Head Coach and 1973-2010 Women's Head Coach). During this tenure as coach, Pioneer High School won 31 Michigan High School State Swim Championships (15 for the men and 16 for the women) and 9 National Dual Meet (Power Points) Championships. The combined teams' overall dual meet record was 1011-128-2 (567-90 for the men and 444-38-2 for the women. The swim program produced 245 National Interscholastic Swim Coaches Association (NISCA) All-American Swimmers for a total of 862 All-American awards. Denny's wife, Elizabeth "Liz" Hill began coaching with him in 1983 and became co-head coach of the Pioneer men's and women's swim teams in 2005. They both retired from coaching the women's team in 2010 and the men's team in 2014.