Happy Fathers Day to our rock! We are so thankful for everything you do for this family!” the Kansas City Current co-owner wrote.The mom of two also shared a photo of their two kids in her Instagram Story, where Sterling hovers over her baby brother.”Brittany has helped out a ton being a champion mom, and so it’s been a lot of fun and to be able to come home every single day and see her and how energized she is and how she’s changing and growing already,” he continued. “I’m just trying to tell her to slow down so I can enjoy every minute of it.”