SAN MARTIN, Calif. -- When Sung Hyun Park entered her first U.S. Womens Open, her goals were modest. Halfway through the tournament, Park has put herself in prime position to contend.Park capitalized on the favorable morning scoring conditions, shooting a 6-under 72 Friday to take a two-stroke lead after the second round of the U.S. Womens Open at CordeValle.I didnt even think about winning because this is the first time for me, Park said through an interpreter. I would like more experience with the USGA, LPGA. But Im trying to enjoy this tournament. Thats why I am just more comfortable, dont even think about the winning, I just enjoy the play.Park, a 22-year-old from South Korea, made her LPGA debut last year when she finished second at the KEB-HanaBank Championship in South Korea. She has played three more LPGA tournaments this year, tying for sixth in her first major at the ANA Inspiration in the spring.Park had four birdies in a six-hole span to move to 9 under before struggling on the final two holes. She hit her second shot into the greenside bunker at the par-4 17th and then missed a short par putt for her only bogey of the round. Park then drove into a hazard on the par-5 18th for a one-shot penalty before saving par with a 15-foot putt.Amy Yang shot a 71 to get to 6 under, tied for second with first-round leader Mirim Lee. World No. 1 Lydia Ko bounced back from a 1-over par first round to shoot 66 for a tie for fourth with Haru Nomura.Lee, who tied a U.S. Open record by shooting 8 under Thursday, birdied three of the final four holes on her front nine in the afternoon to take a one-shot lead over Park.But things then quickly fell apart. She missed the fairway with her drive on the par-4 10th and her approach shot sailed past the green. Her chip attempt fell short of the green before she three-putted from the fringe for a double bogey.Lee then drove into the front bunker on the par-3 12th hole before missing an 8-foot putt for par to fall two strokes off the lead.I kept trying to hit the fairway and the green, but I couldnt, she said. So score, its not bad, but not good, too.Ko got off to a shaky start with a bogey on the first hole before stringing together four straight birdies starting at No. 3. She added two more birdies before capping her round with the seventh of the day at the par-5 18th.My birdie on 3 kind of turned the round around and making the string of birdies definitely helped, she said. Just to know that this is the first time I was under par for the tournament kind of put myself in a positive position.While contending in a major is a mostly new experience for Park, Ko is an old hat at it at the age of 19. She won the Evian Championship last September to become the youngest woman ever to win a major and followed that up with her second at the ANA Inspiration this year.Ko then lost a playoff to Brooke Henderson in the KPMG Womens PGA Championship in Washington last month.I think the more I play, I think the more I get used to it, especially at these majors where the courses are tough, Ko said. You need to stay patient. I think thats the big key Ive been learning, just keep my head high and just enjoy it out here.Henderson, ranked second in the world, and fourth-ranked Lexi Thompson could not match playing partner Ko and both finished the day at 3 over.Among the players who missed the cut at 4 over were last years winner In Gee Chun, 2014 U.S. Open champion Michelle Wie and 1998 winner Se Ri Pak.Pak, whose success helped lead to the surge of South Koreans on the tour, double-bogeyed her final hole to finish with an 80 on the day and plus-9 in her final scheduled tournament in the United States.Some players, including Karrie Webb and Christina Kim, came back to the 18th green to watch Paks final shot and congratulate her on a remarkable career. Luguentz Dort Thunder Jersey . Cuban testified Thursday that he was upset when the companys CEO told him news that would reduce the value of his shares, for which hed paid $7.5 million. 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If John Sadler doesnt have a good day Saturday, it wont be for a lack of trying.Sadler and his primary patron, Hronis Racing, are taking swings in three Grade 1 events on the Santa Anita Park program with varying degrees of promise, ranging from wishful thinking to historically portentous, at least in terms of what could happen next.Hard Aces, a 6-year-old son of Hard Spun, won the Cougar II Handicap at Del Mar as if he might be in for a piece of the subsequent Pacific Classic -- or at least whatever was left after California Chrome and Beholder got through with it. He was 38-1 on the tote board, so expectations were pitched accordingly, and things were going along well enough for the first five of the 10 furlongs, with Hard Aces keeping both favorites in his sights.Then came a rapid retreat, as the Sadler runner wandered under the wire at a mild gallop, far behind California Chrome. The only horse he beat, Win the Space, had been pulled up halfway down the stretch.This is hardly the way you want your horse to come into a race like the $300,000 Awesome Again Stakes, which is headed again by California Chrome.He kind of stumbled at one point and got a nasty cut on his leg, Sadler said. Thats why the jockey jumped off him right after the finish. We put a couple stitches in it, and hes been fine ever since. Hes a tough, old horse.No kidding. Hard Aces has run 34 times, won seven races, and is 10 bucks shy of becoming a millionaire. Seven of his 15 starts since joining Sadler and the Hronis stable have come in Grade 1 events, including a victory in the 2015 Gold Cup at Santa Anita and a second in the 2016 Santa Anita Handicap.What Im trying to do is get him to the Marathon, Sadler said, referring to the $200,000 Marathon Stakes on the Nov. 4 Breeders Cup undercard. So, Im using a Grade 1 race at a mile and one-eighth to prep him for a Grade 2 at a mile and three-quarters, which I guess is a little unusual.Half an hour after the Awesome Again, Sadler and the Hronis brothers -- Kosta and Pete -- will be in the mix for the $300,000 Rodeo Drive Stakes at 1-1/4 miles on firm turf. With 14 entered, no one scared anyone away.Weve entered two, but I might scratch Nancy From Nairobi and maybe find someplace to run her back East, Sadler said.Elektrum is the barns other shooter, fresh off a close third in the John C. Mabee Stakes at Del Mar. She was second in the 2015 Rodeo Drive.Shes finally getting the distance she likes, Sadler said. When Santa Anita elimminated the mile-and-a-quarter Santa Barbara, that left only shorter races, and shes a mare who can handle the distance.ddddddddddddElektrum comes by it honestly. Her sire, High Chaparral, was a two-time winner of the Breeders Cup Turf -- including his dead heat with Johar at Santa Anita in 2003 -- and her maternal grandsire is Inchinoor, the sire of San Juan Capistrano winner On the Acorn.Sadler will take what he can get in the Awesome Again and the Rodeo Drive. Its the $300,000 Zenyatta he can taste, and he has the champion Stellar Wind wound up and ready to fire again against Beholder.When last seen in the afternoon, Stellar Wind was beating Beholder on the square in the Clement L. Hirsch Stakes at Del Mar. The shock was real. At 1-10 odds, Beholder seemed like a mortal lock. Mortal, yes. Lock, no. Stellar Wind laid on her older rival from the start and dug in hard at the end to win by half a length.She was tired after that, but she had a right to be, Sadler said not long after the race.Like every other trainer with a decent mare based out West, Sadler has been living in Beholders world for years.You cant let Beholder just cruise around and save energy, Sadler said. I know that wont work, so I would imagine this race will look fairly similar to the one at Del Mar.There is a lot riding on the Zenyatta. Stellar Wind will try to prove the Hirsch was no fluke, while Beholder needs to shake loose from the only two-race losing streak of her 24-race career, after the Hirsch and her second to California Chrome in the Pacific Classic. The Zenyatta figures to set the stage for the Breeders Cup Distaff five weeks later and a final championship showdown.Sadler gave Stellar Wind an extra week of recovery after the Hirsch, then went back to training with a steady beat of weekly works, most recently three-quarters in 1:12 and change.They might have underestimated us a little bit last time, Sadler said. Do you think we can get them to do that again? Probably not. But we know that both mares like Santa Anita a lot.This is true. The 6-year-old Beholder has run 14 times at Santa Anita and won 13, losing only the 2013 Santa Ynez Stakes when second to Renees Titan. The 4-year-old Stellar Wind has won three of four Santa Anita starts, losing only the Vanity last June, to Beholder.Its another heavyweight bout, Sadler said. Im excited. ' ' '