Long before he was diving into pools and stepping onto podiums in Rio, Murphy had envisioned his success.
In a note shared by NBC, Murphy tells his parents of his grand dreams.
I hope my swimming life continues and I become an Olympian when I grow up, wrote 8-year-old Murphy.

Credit: Xavier Laine/Getty Images
I hope I will break records.
I want to be the best swimmer in the world.
Theres also a cute sketch of him standing on a huge gold medal.
That was a really fast final, Murphy said in a statement through USA Swimming, according toNBC.
Everyone stepped up their game, and I was lucky that my game was a little bit better tonight.
Im super happy with the result, and it hasnt really sunk in yet.