On Tuesday afternoon at the driving range at TPC Sawgrass, Dufner and Ryuji Imada had a casual long-drive contest, which was being tracked with the Track Man golf radar that measures every possible stat you could want, like spin rate, ball speed, club head speed, smash factor, just to name a few. Dufner was absolutely crushing it. He joked he had a case of “beast-itis,” and mockingly flexed like a body-builder. He striped one that recorded a ball speed of 170mph. So if Dufner accidentally hits you with an errant drive, that’s how fast the ball is traveling! Ouch.