In fairness to this dad, on the list of things that you should not do while holding a baby, "diving into a scrum on the stadium floor for a home run ball" trails other modern parenting pratfalls, like using a chainsaw, or being thrown into the sun. Still, this seems ill-considered.
Here's a Vine with the call:
Bad job, home run dad. This is not how to catch a home run while holding your baby.