A year ago, Lauren Doyle was one of about a dozen women playing in the American Ultimate Disc League, competing for the New York Empire alongside hundreds of men in the country’s only professional ultimate Frisbee league.

On a recent Saturday night at Columbia University’s Rocco B. Commisso stadium, Doyle, 30, was again playing professional ultimate, this time on a team of only women: The New York Gridlock, which edged the visiting Austin Torch in the final home game of the season.

The two clubs are part of the eight-team Premier Ultimate League, which will end its inaugural season with a championship playoff this weekend in Atlanta. The competition is a 21st-century “League of Their Own,” formed after a group of about 150 players decided to boycott the eight-year-old American Ultimate Disc League.

The group included mostly male players, willing to lose their spot on their clubs over their concerns about the league’s commitment to equality. Like many purists, they do not see the game as merely two teams tossing a Frisbee around and trying to score goals. They believe its original concept was deliberately carefree, in which mutual respect and sportsmanship were more important than competition.