Dallas Cowboys QB Dak Prescott welcomes first child a baby girl he calls MJ Dallas Cowboys QB Dak Prescott and Sarah Jane Ramos celebrate the birth of their daughter MJ born on Leaf day Prescott now a proud father shares his Newfound sense of responsibility at a children's cancer fund event MJ and her mom are doing well with the family already settling back at home Prescott humorously admits to changing diapers but is Keen on delegating the task the couple had previously expressed the joy and anticipation for their daughter last November Prescott sees the birth of his daughter as a way to honor his late mother embracing the challenges of fatherhood on the field Prescott's future with the Cowboys is uncertain but off the field his new role as a dad brings Joy