April 09, 2010 02:45 PM

Tiffany Rose/Wireimage

It’s a boy for Lisa Leslie and husband Michael Lockwood, her rep confirms to PEOPLE.

Although the retired pro basketball star wasn’t due to deliver until May, Michael Joseph Lockwood II weighed in at 7 lbs., 13 oz. and 21.5 inches long upon his birth at 3:21 a.m. on Tuesday, April 6th.

Baby MJ, as he will be called, joins big sister Lauren Jolie, 2½, as well as Mikaela, 15, and Gabrielle, 18, Lockwood’s daughters from his previous marriage.

Former LA Sparks star Leslie, 37, announced the pregnancy in December.

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