Daisy Ocasio had an accomplished career in the running fields, holding various records at different international races.
Ocasio's photos were commonly seen on Puerto Rican newspapers during the early 1990s, when she was at the top of her career as a runner.
On November 7 of that year, she beat Marischa Sjau, in Lake Worth, Florida, to mark her United States debut.
Then, on December 8 came what could be considered as her best victory: facing future world champion Patricia Demick of Chile, Ocasio won by a six-round unanimous decision.
On April 15, 2000, in what would turn out to be her last fight, she was knocked out by future world champion Britt Van Buskirk, in Temecula, California.