ESPN RADIO TAKES THREE: Firsts in the sports world are tough to come by, but ESPN Radio will score one with Saturday’s debut of “The Trifecta With Spain, Jane and Kate.”

Calling on ESPNW’s Sarah Spain, Jane McManus and Kate Fagan, the weekly program will tackle such subjects as “Are Victoria Secret Runway Show models really athletes?” and “Who are the biggest underdogs in sports this year?” The trio will be front-and-center Thursday night at The Ainsworth for a launch party. Taking aim at the heavily male-dominated audience of sports radio listeners, of which 82 percent are said to be men by ESPN’s estimates, the three women will try to reel in some of the 114 million femles who identify themselves as sports fans.

All three women have written extensively about sports. As a columnist and feature writer for ESPNW, ESPN’s Web site and ESPN The Magazine, Fagan, like her cohorts, hasn’t shied away from controversial subjects. She is also at work on a book for Little Brown titled “Split Image,” based on her ESPNW article about the suicide of the University of Pennsylvania’s Madison Holleran. Spain, a Chicago-based SportsCenter anchor for ESPN1000, has been an ESPNW columnist for more than five years. In November, she sounded off on her own site about how she remains a feminist despite an early career on-air misstep. Having covered New York sports since 1998, McManus’ work has appeared in Newsday, USA Today, The Journal News and The New York Times. She now writes columns and features for ESPNW.