Joe Griffiths saw Doreen Wolff jump 4 feet, 10 ½ inches at a high school track meet. He put spikes on her and only two weeks later she set a new junior world record, jumping 5 feet, 1 ½ inches.
At an Olympic qualifying meet in Winnipeg in 1948, she tied the Canadian record jumping 5 feet, 3 inches. A few weeks later she won the Olympic Trials event in Montreal.
The same summer she became the youngest person named to the 1948 Olympic track and field team. In London, she jumped 5 feet 2 ¼ inches for a fifth place finish.