Donald Sterling, the former owner of the Los Angeles Clippers, filed for a divorce from his estranged wife, Shelly, on Wednesday.

The two have been married since 1955 but legally separated since August 2012, according to the filing in Los Angeles Superior Court. Donald Sterling cited “irreconcilable differences” in his petition.

Neither Shelly Sterling nor her attorney could be reach for comment Wednesday.

The divorce filing comes about a year after TMZ Sports released a recording of Donald Sterling making racist remarks during a phone call with his apparent mistress, V. Stiviano.

The controversy eventually led to an investigation by the National Basketball Association, a heated legal battle and ultimately the sale of the Clippers to former Microsoft Corp. Chief Executive Steve Ballmer.

The Business Journal estimated the Sterlings combined net worth was $3.4 billion as of May, landing the couple on the No. 19 spot of Wealthiest Angelenos. If they divorce and split that stack, they would both rank among the 50 Wealthiest Angelenos. They’d be tied for 35th place on the list, just above Ares Management’s Antony Ressler.