BETHESDA, Md. -- Peter Uihlein, the reigning U.S. Amateur champion, is arguably the most well-known of the 12 amateurs in the field at Congressional this week. UCLA freshman Peter Cantley, who recently received the Jack Nicklaus Award as the top collegian, is also putting his abundant talent on display.

And if Steve Irwin’s name sounds familiar, it should -- his father Hale, who will be in his gallery, is a three-time U.S. Open champ. Not to mention, there’s one amateur who already has a professional victory under his belt.

That’s Russell Henley, who became just the second amateur to win on the Nationwide Tour when he captured the Stadion Classic at UGA last month. He decided not turn pro because he wants to play on the Walker Cup team later this summer.

So Henley comes to Congressional looking for back-to-back low amateur titles at the U.S. Open. He tied for  for 16th at Pebble Beach last year -- along with fellow am Scott Langley, who just graduated from Illinois but is not in the field this week.

Henley, who recently completed his senior year at Georgia, is the only one of the 12 amateurs in the field who has played in a U.S. Open. Here's a complete list: