Leahy moved to Los Angeles in 2012 and covered a variety of different Sports, most notably as a sideline reporter for Turner Sports' March Madness coverage. She worked for a variety of CBS affiliated Sports outlets, including the local CBS LA news. Leahy then became the sideline reporter for American Ninja Warrior on NBC. In September 2015, she took a job to join former ESPN Radio host Colin Cowherd on his new show after his exodus to FOX. Cowherd cited a lack of female voices in Sports talk radio as a reason for Leahy's addition to the show, as well as Leahy's history of developing useful sources as a Sports Journalist.
On November 20, 2017, Leahy criticized CNN for inviting Ball on the air to discuss his feud with US President Donald Trump.