May 20, 2010 01:30 PM

Tony DiMaio/Startraks

Volleyball star Kerri Walsh has two Olympic gold medals — and two baby boys to match!

She delivered Sundance Thomas Jennings, her second son with husband Casey Jennings, at 9:59 p.m. Wednesday, May 19 in Torrance, Calif., her rep tells PEOPLE.

Baby Sundance — who weighed in at 6 lbs., 12 oz. and is 19¾ inches long — joins big brother Joseph Michael, who will celebrate his first birthday this Saturday.

Walsh, 31, expects to be back on the court in time to prepare for the 2012 Olympics with her partner, Misty May-Treanor.

— Sarah Michaud with reporting by Jennifer Garcia

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