Pro Tennis Player Tommy Paul's Must Haves Include an $8 Training Secret

Paul admits he's "a bit of a watch guy." He even wears one while playing. "I got into it because of my coach — he's a real watch nerd — and now I know a little too much about them," he says. His current favorite, the De Bethune DB28 XS Starry Seas Watch, has a blue band, though he swaps in red, white, and blue for the Open. "They somehow made it so it absorbs shock. I forget I even have it on." The watch is only available in-store, and retails up to $100,000. For this purpose, we didn't link it, but we sure do like to look at it.