Baker Mayfield is officially a dad. Mayfield and his wife Emily announced the birth of their daughter Kova Jade Mayfield on Saturday. Emily posted the news on social media with the caption: “My heart could explode at any minute, I swear. Bake was born to be a dad.” The Tampa Bay Buccaneers shared Emily’s post on Twitter. You can see it below: While the Mayfields announced the addition of Kova Jade Mayfield on Saturday, she was actually born on Tuesday. Emily posted on Instagram that: “Baby girl joined us Tuesday night just before 7:30 p.m. She is truly everything we prayed for and more. We’re …