Anthony Ervin won his first gold medal at the age of 19 during the 2000 Summer Olympics.
Now, at the age of 35, he's a gold medalist again after winning the 50m freestyle Friday in Rio.
A lot has happened in the 16 years since that first brush with gold (including acquiring a lot of tattoos).
U.S. & World
Here's a look at what Ervin looked like then and now.