With a swing of the bat and puff of baby-blue powder, Braves slugger Freddie Freeman and his wife, Chlesea, revealed they were having a boy.

The video (below), filmed during spring training in Florida, went viral. And soon there would be imitators.

The Royals' Christian Colon took a page from the Freemans and revealed his baby's gender with a clouded swing at Kauffman Stadium after the Braves visited Kansas City in mid-May.

Now Chelsea Freeman wants to do the same for you. She is offering some lucky soon-to-be-parents a crack at finding out their baby's gender with the swing of a bat at Turner Field on Father's Day weekend. Details here.

See if you can deliver a hit, like Freddie.

(The powder-filled baseballs, by they way, were the creation of Chelsea Freeman's father, Josiah, and are avaliable for sale on Etsy.)