Zach, on their lack of competition with each other:
"One of the things that makes us so successful is that we are pushing each other all the time. If Paige slacks off, I let her know about it, and when I slack off, she definitely lets me know about it! So I think we have a huge advantage with having a family member traveling on the circuit together."
Well, maybe not a total lack of competition:
"Oh my gosh," says Paige, "my brother thinks he's the Monopoly god. I will never forget when I beat him one day. He was having a mental breakdown." Adds Zach, "It's funny because we'll be like, 'Who can fill up a bottle the quickest with the hose? Who can run up five flights of stairs faster?' We just run each other into the ground."