RIO DE JANEIRO -- Shortly after Claressa Shields punched her way through yet another elite opponent to reach another Olympic gold-medal bout, she spontaneously broke into song.Swaying gently to the tune in her head, the worlds best middleweight ripped through several bars of the Bill Withers classic Just the Two of Us, only with altered lyrics to reflect her shared mission with Shakur Stevenson as the only Americans left in the Rio Olympic boxing tournament.Just the two of us, building gold medals in the sky! Shields sang. Just the two of us, me and Shakur.U.S. coach Kay Koroma could only watch and smile.The thing about Claressa, when shes smiling and joking around, thats when shes the most dangerous, he said.Rio has been a song for Shields, who takes on the Netherlands Nouchka Fontijn on Sunday for her second Olympic gold medal.The rest of the worlds top boxers havent been able to wreck Shields good moods ever since she burst onto the international scene at the London Games. Her final bout in Rio de Janeiro is the culmination of a four-year stretch in which she hasnt lost a fight and has rarely even been tested -- certainly not yet at the Rio Olympics, where top female fighters only must win three bouts to claim gold.A lot of girls are here just to beat me, but Im here to win a gold medal, Shields said. Beating me is winning a gold medal to them, so they go out there and they fight me a lot harder than they did any other opponent.Shields is increasingly competing largely against her own preparation and motivation -- something she does well.She gave herself a C-minus grade for her opening bout, but she figured out why she didnt feel right against that Russian opponent. Because she can no longer stomach the food in the athletes village cafeteria after a month in Rio, she had consumed only a peanut-butter-and-jelly sandwich and some chocolate milk on the day before her first fight.She stopped eating like the college student that she recently was, eating proper meals and subsequently dominating Kazakhstans Dariga Shakimova to reach the final.Koroma and head womens coach Billy Walsh work on game plans with Shields, but her superior skills and athleticism often make it relatively easy work. With her confidence fairly bursting, Shields doesnt appear to require much help to dominate.You dont have to worry about if Im going to get out there and not let my hands go, Shields said. Thats never going to happen. I dont even have to warm up for that.Shields beat Fontijn at the world championships in May. Fontijn has a better chance than just about anybody in the world to end Shields dominance, but the talent gap between Shields and the middleweight field has been larger than in any division in Rio.Shields one-sided success and ensuing fame have been an enormous boon for USA Boxing, which is coming home from Brazil with one silver and one bronze from its men after failing to win anything in London.The rising popularity of womens boxing in general has allowed USA Boxing to get the funds to hire veteran Irish amateur coach Walsh, who oversees the entire team from his official position as the womens head coach.Walsh only got the job late last year, and his true focus is on the 2020 Olympics as he attempts to build a cohesive program. After some initial conflicts with his star, he has become a fervent backer of Shields, lauding her example to his other seven fighters.None of these guys understood what I was trying to build with Team USA when I got here, Walsh said. Claressa is the only one that caught on. It was massive. She said, `Youre trying to build a team. Exactly. Were trying to build a bond, and she sees it better than anyone. Chase Utley Jersey .1 million pounds ($61.2 million) on Saturday, giving the beleaguered English Premier League champions a major lift. Cody Bellinger Jersey . Peter Gammons, an analyst for Major League Baseballs network and website, drew the ire of hockey fans on Sunday when he criticized the two NHL teams on Twitter for their physical game the night before. http://www.authenticdodgersgear.com/dodgers-babe-herman-jersey/ . -- James Young couldnt wait to apply those tweaks to his jump shot, and the first one he made against UT Arlington told him it could be a good night. Julio Urias Jersey . -- About a third of the way through the regular season, the Washington Wizards are at . Jackie Robinson Jersey . -- Adam Snyder returned to the San Francisco 49ers this season because the offensive lineman thought it was his best opportunity to win a championship.James Wades shock victory against world No 1 Michael Van Gerwen summed up the unpredictability of the Premier League, says Wayne Mardle. Wade fought back from 3-0 down to seal a 7-4 victory in a collision of two former Premier League champions.The 32-year-old admitted he didnt play spectacularly against an out-of-sorts Van Gerwen, and Sky Sports expert Mardle believes when The Machine motors, he can be unstoppable. Wade, who is out to make amends for a disappointing World Championship, told Sky Sports: Its really good - I felt really relaxed. With the British crowd behind me, it was good fun. Obviously Michael didnt play as well as he can, but why should I stand around and wait. Brutal Barney shuts Power off Raymond van Barneveld thrashed Phil Taylor, while Michael van Gerwen lost on opening night It wasnt a spectacular game. Michael didnt play anywhere near his best - I can win games from bad situations and this crowd have been brilliant.Wade, who hit five maximums and two ton plus finishes of 118 and 121, added: Ive been concentrating. I didnt play spectacularly but I did enough and I hit my finishes.Im really, really happy because there are not many people who are going to take points off Michael Van Gerwen - there really isnt because hes the best player in the world. We know hes got the whole game, winning mentality, he hates losing and I think thats what dragged him through on the night. Wayne Mardle on James Wade Mardle, meanwhile, admitted the match showed just why the Premier League can be so unpredictable.One man was 3-0 up averaging the best part of 102, 103 while James was 3-0 down averaging 86, 87.At that point you cant see a turn - its impossible. Then it happened. There was an 80 finish that Michael Van Gerwwen wanted.dddddddddddd He hit the 60, but missed two at double 10 and that was to go 4-4. He missed that, so it was 5-3 to James, who then came up and hit double top. Van Gerwen lost 7-4 to Wade, but started in style with a 167 finish Then James looked confident. He won five legs on the bounce - he wasnt looking the better player and then he was. The last three legs he played beautifully.The confidence is there. Every now and again he hits too many 60s and tons. If he can turn those into 140s and 180s - we know hes got the whole game, winning mentality, he hates losing and I think thats what dragged him through on the night.You can watch the second round of Premier League action, live on Sky Sports 1 from 7pm in Newcastle on Thursday, or watch without a contract on NOW TV.We will be building up to the coverage on our live blog here www.skysports.com/darts and the Sky Sports app will keep you up to date with all the action. Also See: Brutal Barney shuts Power off Premier League Darts recap Whos got the X Factor? Mardles PL predictions Cheap Jerseys China NFL Jerseys China NFL Jerseys Wholesale Discount Basketball Jerseys Cheap NHL Jerseys Authentic Cheap Baseball Jerseys Free Shipping Cheapest College Jerseys Sale Cheap Football Jerseys China Nike NFL Jerseys Canada Wholesale NHL Jerseys From China MLB Jerseys Outlet Canada Wholesale NBA Jerseys Canada Store Cheap Soccer Jerseys China Cheap Authentic Jerseys Canada ' ' '