>> US Open scoreboard | Expert Picks

Cole Hammer is 15 years old. On Thursday, he officially became the third-youngest competitor at the US Open -- ever. Prior to his first shot of the tournament, Hammer took a moment to gather himself before beginning probably the most challenging test of his life.

And, as expected, Hammer was clearly emotional, showing signs of tearing up.

Hammer's opening drive left him unhappy with the result, but according to analysts on the scene, it really wasn't as bad as he made it out to be. Furthermore, Hammer appeared to keep his composure.

Even if Hammer didn't walk away from his first shot satisfied, he probably won't be upset about the aftermath. In his first hole ever at the US Open, Hammer just missed out on a birdie, but still managed to make par.

Again, this kid is 15 years old.

And he's out there parring holes at the US Open. He's also out there running up some slopes to follow his shots.

Through his first five holes, which included a par on the 512-yard 13th hole, Hammer is at a respectable 2 over.

Wink of the CBS eye to Yahoo Sports

Hammer is holding his ground through five holes. (USATSI)