Retired Olympic swimmer Michael Phelps and his wife Nicole Phelps have announced the birth of their third child together, a baby boy named Maverick Nicolas. Maverick is the couple's third son. They are also parents to 3-year-old Boomer Robert and 1-year-old Beckett Richard. "Family of 5! Welcome @mavericknphelps to the world!" Phelps said on Instagram yesterday alongside a photo of himself with Boomer and Beckett spending time with Nicole and Maverick at the hospital. "Mama and baby are healthy and the boys are pumped to be big bros! #housefullofboys," he continued.