RIO DE JANEIRO -- Green, not gold, was the color of the day at the Olympic diving venue.Sure, China won its third consecutive gold medal on Tuesday, but the buzz was about the color of the water in the diving pool -- a murky green.That was in stark contrast to the pools light blue color the previous day and also that of the clear water in the second pool used for the water polo competition at Maria Lenk Aquatic Center.British diver Tom Daley, who earned bronze in mens synchronized 10-meter on Monday, tweeted a photo of the two pools next to each other and captioned it, Ermmm...what happened?!Water quality has been a major issue surrounding the Rio de Janeiro Olympics, but in the ocean and lagoons, not the pools.A statement from Olympic organizers said water tests were conducted and there was no risk to athletes. They couldnt explain the color change, but said its being investigated.Rio spokesman Mario Andrada said the green was caused by a proliferation of algae.This was because of heat and a lack of wind, he said. We did all the chemical tests. The pool will be blue tomorrow (Wednesday).If it were green and yellow, we would know it was a patriotic thing, Andrada joked, referring to Brazils national colors.Canada team leader Mitch Geller suspected the cause was algae that multiplied quickly in the days warm and sunny conditions.Everybody was scratching their heads going, `Whats going on? he said. I think that the filter is busted, but Im not sure. Its not really dangerous. Its not like its toxic or dirty or any of that. It seemed to get worse over the course of the competition.The kale-colored water wasnt just a cosmetic nuisance; it was so dark that divers couldnt see the bottom of the pool.Theyre used to seeing the water, Geller said. The visuals are really, really important in diving.Chen Ruolin, who teamed to win gold with Liu Huixia, said it didnt affect them.Paola Espinosa of Mexico, competing in her fourth Olympics, noticed the pool getting increasingly darker throughout the six-round competition. But she said the water didnt smell or affect her skin.I havent seen anything like it before, Espinosa said. But its Brazil and everything is green down here, so maybe it was a decoration to make it look pretty.American Jessica Parratto wears contacts and said the water didnt burn her eyes.Bronze medalists Meaghan Benfeito and Roseline Filion of Canada tried not to laugh as they gazed at the water from atop the 33-foot tower. They liked that the dark green color offered a helpful contrast with the blue sky.The only thing we said is dont open your mouth in the water, just in case, Benfeito said.Geller said a Canadian pool expert was coming in Wednesday and he would offer to help Rio organizers chemically treat the water if theres a problem with the filter.I dont know what its going to look like tomorrow, he said. I hope its not a swamp.---Associated Press Writers Carlos Rodriguez and Stephen Wade contributed to this report. http://www.eaglesrookiestore.com/Eagles-Seth-Joyner-Jersey/ . Louis Blues. Shane Hnidy joins Brian Munz for the broadcast on TSN 1290 Radio at 7pm ct. http://www.eaglesrookiestore.com/Eagles-Ronald-Darby-Jersey/ . Thats about all he can do right now, so hes trying not to think about when he might be able to play again for the Los Angeles Lakers. http://www.eaglesrookiestore.com/T-Shirts/ .J. -- Marty Brodeur beat the Pittsburgh Penguins yet again. http://www.eaglesrookiestore.com/Hoodie/ . Andrew Luck lost his favourite target and the Indianapolis locker room lost one of its most revered leaders when Reggie Wayne was diagnosed Monday with a torn anterior cruciate ligament in his right knee that will cost him the rest of the season. http://www.eaglesrookiestore.com/Eagles-Wes-Hopkins-Jersey/ . Despite dominating possession, Schalke needed an own goal from Nicolas Hoefler for the breakthrough a minute before the interval. The Freiburg midfielder misjudged Jefferson Farfans corner and bundled the ball into his own net. RICHMOND, Va. -- Denny Hamlin won the pole Friday for the NASCAR Sprint Cup Series race Saturday night at Richmond International Raceway.The Joe Gibbs Racing driver, racing about 20 miles from where he grew up in Chesterfield, turned a fast lap at 122.344 mph in the third round of qualifying to claim his first pole position of the year. Its the 24th pole position of his career and third in 21 tries on the 0.75-mile oval.It also marks the 24th consecutive race Hamlin will start from in the top 10.We were second and third so many times, it was crazy, Hamlin said about his consistently good qualifying but inability to win a pole. We actually looked at the rainouts and its like, Were going to start seventh because of a rainout and it hurts our average.Hamlin said his average starting position, 6.1, is the best since Jeff Gordon had a 5.0 average in 1995.That was a pretty cool stat to see, he said.The pole was somewhat unexpected, Hamlin said, because he had to run several laps in each round while others ran just one.ddddddddddddI thought that for sure we had too many laps on our tires, he said. A lot of guys that we were challenging only had one lap per session. My car didnt really come in that quick, so I had to run multiple laps.Earning the pole regardless is promising, he said.Running that fast with so many laps tells us we have a good car for the long run, he said.Kyle Larson will start on the outside of the front row, with Matt Kenseth and Jamie McMurray in the second row, followed by Kurt Busch and Martin Truex Jr. in the third. 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