It was the tennis edition of gender reveals. Tennis pro John Isner and his wife welcomed their first child in September and they're already expecting baby No. 2. Using a special tennis ball, Isner's serve revealed his next child will be a boy. He's not the only pro athlete to perform his own child's gender reveal. Former Major League Baseball player Ryan Howard took a swing to reveal his new baby's sex, first striking his famous bat pose. InsideEdition.com's Mara Montalbano has more.