Sure, you've got your Mouths, and your Skills, your Chases and now, your Clays. But when it comes to guys on One Tree Hill, it all begins with the improbably close-in-age Scott (half) brothers -- Nathan and Lucas.

How well do you know this dynamic, heart-breaking, basketball-playing duo? Take our quiz and find out!

Test Your Scott Brothers I.Q.

What was your score? Tell us in the comments below!

PHOTO SOURCE: Warner Brothers