Nicole Heavirland began playing rugby at the age of 15, quickly falling in love with the sport and earning an invite to the U20s Nations Cup held in Lake Placid. As a well-rounded athlete, Heavirland played basketball during her first semester at Army West Point before making an official transition to their rugby team in Spring of 2015. That same year, she was also named a U.S. Military Academy All-American.
Shortly after, Heavirland made her USA Rugby debut during the 2015-16 HSBC World Rugby Sevens Series on home soil at the Atlanta Sevens. In 2016, she was selected as a reserve for the Olympic Games Rio.
In 2017, Heavirland took to the XVs pitch where she suited up for the Rugby World Cup 2017 in Ireland, helping the Women's National Team advance to the semifinals. A natural athlete on the sevens pitch, Heavirland served as Captain of the USA Women's Sevens for a number of years, earning a spot on the Tokyo 2020 Olympic squad.