Good ballboy!

Shelter dogs have replaced ballboys at the Brazilian Open and it's so adorable!

The dogs are even decked out with sweat bands.

Madalena Spinazzola, from Premier Pet, said "They are dogs that have had a difficult trajectory, yes, but what we want to point out is not the history suffered from the past, but to prove that no matter what they have gone through, they can be great companions today and in the future."

Watch below!