Miami Heat center Shaquille O'Neal wants to divorce Shaunie, his wife of nearly five years. ''The marriage between the parties is irretrievably broken,'' says his petition, filed Tuesday by attorney Ira Elegant.

The O'Neals have four children together -- Shareef, 7, Amirah, 5, Shaqir, 4, and Me'Arah, 1. Shaq has a daughter, Taahirah, and Shaunie has a son, Myles, from previous relationships.

The family lives on Miami Beach's exclusive Star Island. They bought an $18.8 million estate in the summer of '04, at the time of his trade to the Heat. It is for sale -- No. 32 is asking $32 million.