Junior Golf: The Ping Invitational\nAn elite field of boys and girls was on hand for The Ping Invitational, an American Junior Golf Association event at Karsten Creek in Stillwater, Okla.\nYi Keun Chang practices on the range as his father, Oh Chun, observes.\nMotin Yeung (left) and Jim Liu share a moment during a practice round.\nAriya Jutanugarn, a 15-year-old from Bangkok, Thailand, is the 2011 U.S. Girls' Junior champion and No. 1-ranked girl on the Polo Golf Ranking.\nA number of the players used push carts, including Kyung Kim, 17, of Chandler, Ariz.\nMoriya Jutanugarn, 17, Ariya's older sister, arrived in Stillwater No. 2 in the Polo Golf Ranking.\nGabriella Then, 15, of Rancho Cucamonga, Calif., and her mother, Maya.\nThat's not Rickie Fowler, but 16-year-old Stratton Nolen of Austin, Texas, who is a fan of the young pro's style.\nConnor Black, 15, from Houston, recovered nicely from trouble on the 16th hole.\nThis foursome at Karsten Creek was oblivious to the AJGA's Get Crackin' Pace of Play policy.\nAt 13, Allisen Corpuz of Honolulu was one of the youngest players in the field.\nA trio of girls catches up by the Karsten Creek practice green prior to the tournament.\nThe sun was just coming up as Rinko Mitsunaga warmed up for the first round.\nRobert Geibel, 16, of Pembroke Pines, Fla., works on his bunker play.\nBeau Hossler greenside at No. 18, where the 2011 drought's effects on the lake were evident.\nShun Yat Hak, 17, plays his second shot to the 18th hole.\nKaren Chung, 16, had a distinctive headcover for her driver.\n(Left to right) Ariya Jutanugarn, Jaye Marie Green and Karen Chung make an early-morning walk up the first fairway.\nCalifornian Cameron Champ drives between appropriate tee markers, given Stillwater is the home of the Oklahoma State Cowboys.\nCody Proveaux, a 17-year-old from Leesville, S.C., has verbally committed to attend Clemson.\nNo junior gets to this level without lots of hard work, as shown by Doug Ghim's well-used golf glove.