UPDATES: 5/31/14, 7:45 a.m. EDT. Donald Sterling has officially sued the NBA in federal court in Los Angeles. Click here for the 172-page complaint, courtesy of USA Today. The league has a formidable counter to Sterling’s suit in an indemnification agreement it has reached with the Sterling Family Trust, according to SI.com legal analyst Michael McCann. 6/5/14, 8:45 a.m. EDT. ESPN reports that Donald Sterling has officially dropped his suit against the NBA and will accept the sale of the team to Steven Ballmer. 6/10/14, 10:00 a.m. EDT. Not so fast. Sterling’s suit against the NBA is reportedly back on after he withdrew his support of a Clippers sale to Ballmer.

Covington & Burling, Greenberg Glusker Fields Claman & Machtinger, Kirkland & Ellis and Proskauer Rose are advising on what is shaping up as the most lucrative sale of a professional sports team in U.S. history as former Microsoft CEO Steve Ballmer has agreed to pay $2 billion to acquire the National Basketball League’s Los Angeles Clippers.