Tally up the score: Lisa Leslie is pregnant again.

The retired pro basketball star and husband Michael Lockwood are expecting their second child – a boy – in May, she tells PEOPLE exclusively.

“We are excited,” says Leslie, 37, who became pregnant in September during her last month as a player with the Los Angeles Sparks. “When we found out he was a boy, Michael shouted, ‘Yes, thank you Jesus!’ ” jokes the former forward, who received the news the day before Thanksgiving.

The couple plan to name their son Michael Joseph Lockwood, Jr., but will call him by the nickname M.J. With the same initials as basketball legend Michael Jordan, Leslie suspects basketball could be in her son’s future.

“I imagine M.J. won’t be shorter than 6′6″,” says the 6′5″ three-time WNBA MVP and four-time Olympic gold medalist. Husband Lockwood, a pilot for UPS and a former Air Force Academy basketball player, is 6′7″.

“I’m feeling really good,” adds Leslie, who retired from the Sparks in October and is currently working in broadcasting and promoting a line of CieAura health products.

She and Lockwood, 44, married in 2005 and have a 2 ½-year-old daughter together, Lauren Jolie. Michael is also dad to two girls from his previous marriage – Mikaela, 15, is a high school junior, while Gabrielle, 18, is a freshman at Baylor.

The toddler – herself a tennis and swimming enthusiast – is looking forward to having a baby brother, Leslie says. “She’s thrilled; she says it’s her baby and I’m just carrying him,” Leslie says laughing.

The former basketball star’s second pregnancy is different from her first in another respect – she’s showing much sooner.

“As soon as I stopped playing, my belly popped right out,” she explains. “I wore a two-piece bathing suit with my first pregnancy after three months – but no way now!”