Austin Levingston's Aug. 16 post has received more than 3,000 likes. In it, the 21-year-old man, from Great Bend, Kansas, says he's attending college and hopes to be the first person in his family to get a degree. He also tells Phelps, "I'm hoping to swim in the Olympics just like you someday."
Levingston also is a doppelganger for Phelps, who grew up outside Baltimore. Levingston included a few pictures of himself which show a strong resemblance to the 23-time gold medalist.
Levingston tells The Baltimore Sun he doesn't know if Phelps saw his post.