RIO DE JANEIRO -- Olympic athletes have been competing in near empty venues and before thin crowds in other locations during the opening days of the Rio Games -- a problem that can be traced to long security lines, traffic and a lack of familiarity in some sports.Rugby and equestrian venues have been devoid of fans, and a Brazil volleyball match on famed Copacabana Beach had lots of empty seats Sunday. Scattered seats were open early during the basketball game Saturday night between China and star-studded Team USA, usually one of the biggest draws of the Olympics.Rio organizers said long lines at airport-style security checkpoints prevented fans from getting into events. The line for the beach volleyball venue stretched down the Copacabana promenade to the Olympic rings display several blocks away, though the venue has not been full for any of the matches.Organizing committee spokesman Mario Andrada the problem was being addressed, and hes hopeful that lines would move quicker as the Summer Games entered its first full week.We believe that most of the issues ... have been solved, Andrada said Sunday. That doesnt mean we rest ... Security overall remains our main priority, and were going to keep an eye on it.There were long lines at bus stops on Saturday, the first full day of the Games. Lines at concessions stands were slow at the Deodoro venue, where events like rugby and shooting are being held, in large part because workers were stuck on security lines to get in the grounds.But I must emphasize, even when we have some empty seats in the some stadiums, we never had a low atmosphere, Andrada said.Crowds were loud and enthusiastic for fencing. Swimming made a splash, as usual. The stands were nearly full with cheering fans when the U.S. womens gymnastics team took the floor for preliminaries on Sunday.Boxing and rugby didnt fill the stands, though those who were there were vocal. Brazilian fans led soccer-style chants at the U.S.-China basketball that brought a lively atmosphere at times to the blowout.Im a bit bummed to be honest, because especially these women have worked really hard to get here, said Nikki Diggs, a fan from California who watched Sundays rugby match between the United States and Australia. The Olympics mark the first time womens rugby has been in the games.Its their first Olympics so its a bit of a bummer but I think a lot of people were scared off and they shouldnt have been because everything has been really great, Diggs said.Any problems with security lines seemed to have dissipated at the main Olympic Park venue by Sunday afternoon.We literally got out of a cab, walked in. Breezed right in, said fan Rochelle Taylor of Detroit. She and her friend waited in a security line for an hour on Saturday.Security isnt necessarily the only reason that could be keeping people from their seats. Logistical issues can often slow things down early in an Olympics.Traffic has been a problem, so much so that Mayor Eduardo Paes has pleaded with locals to share car rides until Aug. 21.Andrada said about 82 percent of the 5 million tickets for the Olympics were sold as of Sunday. About 75 percent attendees are Brazilian.Hoping to boost slow sales, organizers in mid-July opened up their local ticket website to the rest of the world, meaning that fans outside Brazil could buy tickets at local rates.As for Brazilian fans, theyre getting exposed to sports other than their beloved soccer and volleyball.Sometimes we spot that they dont know exactly how to behave in some sports because theyve become fans of (soccer) for many years, Andrada said. And one of the legacies of these games is to break the mold of either volleyball or football, for people to assess different sports.---AP Sports Writers Jimmy Golen and John Pye contributed to this story.---Online:AP Summer Games website: http://summergames.ap.org/ Wholesale Soccer Jerseys . The formidable trio of Canadian receivers -- individually known as Chris Getzlaf, Rob Bagg and Andy Fantuz -- will share the field at Mosaic Stadium one more time on Sunday. Cheap Nigeria Jerseys .com) - Christian Ponder will get another chance to prove himself for the Minnesota Vikings, with head coach Leslie Frazier announcing Wednesday that the struggling quarterback will start this weekends game against the Green Bay Packers. http://www.cheapsoccerjerseysoutlet.com/?tag=cheap-belgium-jerseys . -- Jacksonville wide receiver Cecil Shorts will likely be a game-time decision whether hell play Sunday in the Jaguars home game against the San Diego Chargers. 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Pop N Scotch has been back in Queensland for more than five months but a lack of options in his home state has prompted trainer Liam Birchley to send the unpredictable stayer to Sydney.Birchley admits Pop N Scotch is a long shot to win Saturdays Listed Christmas Cup (2400m) at Randwick.But the Eagle Farm trainer is hoping the horse can show shades of the form which has brought three seconds in the Queensland Cup.Theres no races up here past 2200 metres, Birchley said.A lack of options was also the catalyst for the Victorian interlude in Pop N Scotchs career.While Eagle Farm was being redeveloped Birchley took Pop N Scotch to Victoria late last year where he performed well in a strong form race at Geelong and after another three starts he stayed for an unsuccessful stint with Darren Weir.He returned to Birchley earlier in the year for an agonising third defeat in a Queensland Cup and was sent to the paddock for a speell.ddddddddddddBirchley said his second-up run in his current preparation over 2200m was encouraging but a subsequent disappointment over the same distance at Eagle Farm on December 3 showed signs he needed further.Some days with him you dont know what youre going to get unfortunately, Birchley said.Trainer Peter Robl has veteran Iggi Pop in the race after a gutsy third in the Listed ATC Cup (2000m) at Rosehill on December 3.He was terrific. 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