Post Malone is one of the biggest stars in the world.

But nine years ago, he was an unknown artist with a SoundCloud, Pro Tools, and a dream.

In 2014, his track White Iverson made him a viral sensation.

Earlier this month, it became his tenth song to hit a billion streams on Spotify.

Allen Iverson, who inspired both the song and Post's beer pong game, congratulated him on the accomplishment.

"I heard I inspired your beer pong game," AI said.  "Congrats on a billion Spotify streams and your tenth plaque.  The whole world loves this song and I'm honored to be a part of it. Keep that same form Post.