Jeffrey Kessler, a veteran litigator in the sports arena, has filed his long-awaited antitrust suit against the governing body for soccer in the U.S.

The move against the U.S. Soccer Federation by the high-powered Winston & Strawn partner’s client, the North American Soccer League, took the form of a 71-page complaint filed on Sept. 19 in a federal district court in Brooklyn, New York. It had been at least two years in the making.