There is an famous photo circulating of a young Katie Ledecky obtaining an autograph in 2006 from her swimming hero, Michael Phelps.
Now, 10 years later, the roles have been reversed.
The duo recreated the photo on Monday in Rio, but this time Phelps is getting the autograph from Ledecky.
The picture was posted to Ledecky’s Facebook page with the caption, "Recreating a 10-year-old photo...in reverse! Katie was more than happy to sign a poster for the Greatest Olympian of All-Time."
Phelps, now 31, is the most-decorated swimmer in Olympic history. But back in 2006 he was still fresh off of a stunning performance in the Athens Olympics, where he won his first six gold medals.
Ledecky, who was 9 when that original photo was taken, could only dream of where her abilities would eventually take her. She’s now considered alongside Phelps as one of the greatest swimmers in U.S. Olympic history after dominating the Rio Games.
On Saturday, Phelps discussed during a Facebook Live chat how he would do in a race in the pool against Ledecky.
"I think I could take her in a 400," Phelps said. "800 or above, she would whoop me and tear me to shreds."