WASHINGTON -- Former No. 1 Caroline Wozniacki retired from her second-round match at the Citi Open against Sam Stosur because of an injured left arm.The right-handed Wozniacki said that she felt pain while hitting a two-handed backhand at 5-all in the first set of a match that began Wednesday night and ended just past midnight on Thursday. She was treated by a trainer and wound up winning that set 7-5, but stopped playing after getting broken to trail 4-3 in the second.There was a point where I hit a backhand and I just felt it, and I was like `Oh, its nothing, Wozniacki said. But then I hit another backhand and I was like, `OK, its something. And it just got worse.Its the latest in a series of setbacks this season for Wozniacki, the U.S. Open runner-up in 2009 and 2014.She hasnt won a Grand Slam match this year, losing in the first round at the Australian Open and Wimbledon and missing the French Open because of an injured ankle.At this point, I just cant catch a break. Im thinking, `Im going to catch a break sooner or later. But right now, its just like one thing after the other, Wozniacki said. I feel like Im hitting it pretty well. Im serving well. And its like, this happens. Its just like really disappointing.Wozniacki is supposed to represent Denmark at the Rio de Janeiro Olympics next month and carry her countrys flag in the opening ceremony. She won an appeal to the International Tennis Federation to allow her to compete at the Rio Games after she was unable to fulfill the Fed Cup requirements.Against 2011 U.S. Open champion Stosur, Wozniacki was trailing 5-3 at the outset before taking four games in a row. That success came despite how hard it was for her to use her left arm, which even bothered her during ball tosses for serves. She said afterward she was surprised that the top-seeded Stosur kept hitting to her forehand even after the visit from the trainer.She started kind of running around her backhand a little bit more, which is pretty unusual for Caroline to want to do that. So I kind of thought, `OK, theres something going on, Stosur said.As for why she had trouble taking control of the match, Stosur replied: Sometimes its quite difficult playing somebody whos injured.The match was played on a secondary grandstand court, instead of in the hard-court tournaments main stadium, which gets more mens matches than womens matches during the joint event.I notice theres not too many matches on center court for the women, unfortunately, Stosur said when asked by a reporter about the scheduling. Itd be nice if we were kind of 50-50 on center court, thats for sure.---Follow Howard Fendrich on Twitter at http://twitter.com/HowardFendrichAleksander Barkov Jersey . The next step is a better finish. 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Its 1987 and a Brazilian playmaker, known as Mirandinha, is being paraded around St James Park to the passionate Newcastle fans.After the blissful whirlwind of a second Melbourne Cup and the arrival of his fourth child jockey Kerrin McEvoy has slotted back into Sydney racing without missing a beat.Almandins victory put a second Cup on the 36-year-olds mantelpiece 16 years after Brew thrust him into the limelight.Eight days after his heroics in Australias great race, his wife Cathy gave birth to their first daughter Eva-Mae.We havent had a heap of time to sit down and really look back on it all, McEvoy told AAP.Weve just been trying to get the newborn settled and into a routine which were getting on top of now.That has coincided with McEvoy returning from the pinnacle of Australian racing to the regular working week of one of Sydneys finest jockeys.You still have to pinch yourself to think that youve won a Melbourne Cup again, McEvoy said.There has been no sign of a Cup hangover.McEvoy has booted home 10 winners since winning the worlds richest handicap including Group Three victories on Spright and Aspect as well as the Listed Sandown Cup aboard Qewy.He underscored his form with a winning double at Canterbury on Wednesday, his second metropolitan brace since returniing to Sydney.ddddddddddddMcEvoy will be out for more success at Rosehill on Saturday with key rides aboard Religify in the Group Three Festival Stakes (1500m) and Princefamous in the Listed Starlight Stakes.Chris Waller-trained gelding Religify rewarded punters who remained loyal after two defeats as favourite when McEvoy rode him to win the November Handicap (1400m) at Rosehill on November 19.Hes a horse that makes his own luck, McEvoy said.Youve got Rageese and Hazzabeel up from Melbourne, a couple of other locals that weve seen plenty of times.So its a good quality race and he seems to be in good form.On the same day Religify won, McEvoy got Princefamous home and he sticks with him in the Starlight where the horse drops to 54kg.It strikes a chord with me that hes in with a light weight on his back, McEvoy said.Hes going to be up there making his own luck hell be looking the winner at some stage.McEvoy will also be on early favourite Falkenberg in the Listed ATC Cup (2000m) for trainers Peter and Paul Snowden. 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