Nike has signed up Brooks Koepka and Tony Finau, two of the youngest golfers on the PGA Tour, along with 12 other elite golfers. Koepka, 25, is ranked 16th in the Official World Golf Rankings. He turned pro in 2012. Finau, who is ranked 80th, turned pro in 2007, upon graduation from high school. The other 12 are Lucas Bjerregaard (Denmark), Pan Cheng-tsung (Taiwan), Ashley Chesters (England), Trevor Cone (U.S.), Tim Crouch (U.S.), Marcus Kinhult (Sweden), Tom Lewis (England), Denny McCarthy (U.S.), So Hye Park (Korea), Hunter Stewart (U.S.), Joshua White (U.S.) and Rumi Yoshiba (Japan).