NEW YORK -- At 19, Jared Donaldson is the youngest American man in the U.S. Opens third round since 2007. A key part of his growth as a tennis player happened in another country, though.When he was 14, Donaldson left home to train in Argentina, so he could work on his game on clay, improve his footwork and get lessons on how to use spins on his shots.He learned more, too, during the 2 1/2 years he was there.The biggest takeaway from me in Argentina was how focused and dedicated those guys were training. They were so serious. I think it was really eye-opening for me. The fact that they work so hard, even when they were tired. Clay court is so physical, said Donaldson, who is ranked 122nd and got through qualifying to reach the main draw at Flushing Meadows. It put me in a pro mentality when I was very young.Heading into Saturdays third-round match on Court 17 against 21st-seeded Ivo Karlovic of Croatia, Donaldson already has enjoyed the best week of his nascent career. Not only did he collect the first two Grand Slam victories, but they came against a couple of established players, 12th-seeded David Goffin of Belgium in the first round and Viktor Troicki of Serbia in the second.And even if other U.S. teens have drawn more attention recently -- a pair of 18-year-olds, Taylor Fritz and Frances Tiafoe come to mind -- Donaldson has big things in mind.I want to be top 10, top 5, No. 1. Eventually, if I get to that ranking, Ill have enough attention, almost too much attention, he said. I just have to make sure that I stay focused on my game, try not to let the outside factors kind of dictate how I play or act. I just have to keep improving.To that end, he started working with former pro Taylor Dent as his coach, initially aiming to serve better. But Donaldson credits Dent -- and his father, Phil, also a former player -- with improving other aspects of his play, also.All the kind of things Im doing out there now is a reflection of (Taylors) influence on me, coaching with me, working with me, Donaldson said. I owe a lot to him.Karlovic will present a challenge when it comes to returning serves: The 6-foot-11 Croatian, who beat American Donald Young in the second round, set a U.S. Open record with 61 aces in his first-round match Tuesday.Here is what else to watch Saturday at the U.S. Open:WILLIAMS SISTERS: Once again, both Williams sisters will be in action on the same day -- and in the same arena, Arthur Ashe Stadium. No. 1 seed Serena Williams goes first, facing 47th-ranked Johanna Larsson of Sweden in the afternoon. No. 6 Venus Williams plays at night against No. 26 Laura Siegemund of Germany. While Serena is bidding for a record 23rd Grand Slam singles title, and Venus owns seven, neither Larsson nor Siegemund ever has been as far as the fourth round at any major.KYRGIOS IN SPOTLIGHT: In the final match under the lights in Ashe, 14th-seeded Nick Kyrgios gets his chance on center stage, facing 63rd-ranked Illya Marchenko of Ukraine. Kyrgios is among the most talented -- and moody -- men on the tennis tour, as likely to hit a `tweener as fantastic as Rafael Nadals from Friday as he is to throw a racket or appear to give up mid-match.MURRAY VS. LORENZI: As 2012 U.S. Open champion Andy Murray tries to become the fourth man in the Open era, which dates to 1968, to participate in all four Grand Slam finals in one season, he takes on Italys Paolo Lorenzi, who is ranked 40th and will be playing in a third-round match at a major for the first time.---Follow Howard Fendrich on Twitter at http://twitter.com/HowardFendrich Cheap Dan Feeney Jersey .C. -- Calgarys Kevin Koe did it the hard way again. LaDainian Tomlinson Jersey . Howard Ganz, an MLB lawyer, said in a letter to U.S. District Judge Edgardo Ramos that Rodriguezs claims do not come "remotely close" to what is needed to overturn an arbitration decision in federal court. http://www.cheapchargersjerseyselite.com/?tag=cheap-brandon-mebane-jersey .com) - Yankee Stadium is the home of the Bronx Bombers, but on Sunday afternoon it will open its gates to host the latest addition of the Hudson River Rivalry. Forrest Lamp Jersey .ca! 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Theyve stayed humble throughout a tough offseason, and theyve just been eager to get back to proving themselves on and off the court.Nate Mason had 13 points and seven assists, Eric Curry added 12 points and Reggie Lynch and Jordan Murphy each added 10 points for the Gophers (5-0), who won their first five games to start a season for the first time in three years. With transfers Springs and Lynch and freshmen Coffey and Curry, theres a new look and some new life to this team after a miserable 8-23 finish.What the team went through last year, I think that matured everyone, Springs said.Dusty Hannahs scored 20 points and Moses Kingsley had 10 points and 10 rebounds for the Razorbacks (3-1), whose first road trip of the season was rough. They didnt make a 3-pointer until Hannahs hit one at the 4-minute mark and finished 1 for 8 after entering the game 24 for 54 from behind the arc (44.9 percent).Their 21 turnovers were their most since March 21, 2015, an NCAA tournament loss to North Carolina, and they had only six fast-break points after tallying 51 over the first three games. The Gophers had a 26-9 edge in points off turnovers.Weve just been being really sloppy, Hannahs said. It hasnt been like this is a random occurrence.The Gophers started slowly, but the Razorbacks missed nine of their first 10 shots from the floor and were outscored 25-6 over a stretch of more than 10 minutes. Springs swished two more 3-pointers after that run in the closing minutes of the first half, and the Gophers led by at least 14 points for the rest of the game.ddddddddddddCOFFEY BREAKThe freshman Coffey had 30 points on Friday against St. Johns and after a quiet first half got the crowd going with an array of fast-break dunks and slick layups plus a 3-pointer that gave the Gophers a 67-46 lead to match their largest of the game.Everybody knew he was struggling, so everybody kept going to him and encouraging him, Mason said. That shows the unselfishness for our team.CURRYING FAVORCurry, a native of Little Rock, Arkansas, who was recruited by the Razorbacks, went 8 for 8 from the free-throw line.HEY, WE PLAYED THEM TOOBoth Arkansas and Minnesota have already beaten Texas-Arlington, the team picked to win the Sun Belt Conference in a preseason coaches poll. The Gophers beat the Mavericks 84-67 on Nov. 14, and the Razorbacks edged UTA 71-67 on Friday.BIG PICTUREArkansas: A team picked to finish fifth in the preseason SEC media poll that tapped Kingsley as the player of the year, the Razorbacks must make some significant improvements to be competitive in a Dec. 17 game against No. 22 Texas. With an influx of junior-college transfers, chemistry is a work in progress.Theyre still learning how to play with one another, coach Mike Anderson said.Minnesota: After finishing as the third-worst team in the Big Ten in defense last season, with the second-highest percentage of 3-pointers allowed, the Gophers have been markedly better, beginning with the fundamentals of cutting off baseline drives and rotating over to help. Lynchs shot-blocking presence is a big boost too.Once youre getting stops, it makes the game a little bit easier for everyone, Springs said.UP NEXTArkansas returns home on Monday to host Mount St. Marys, the first of five straight home games.Minnesota hosts Southern Illinois on Friday, before the first road game on Monday at Florida State in the ACC/Big Ten Challenge.---For more college basketball coverage: http://collegebasketball.ap.org and http://www.twitter.com/AP-Top25 Wholesale Jerseys China Wholesale Jerseys Wholesale Jerseys China Jerseys Cheap Jerseys Free Shipping Wholesale NFL Jerseys Wholesale Jerseys ' ' '