A man rides a bicycle past electoral campaign posters in Bamako August 9, 2013. Mali will hold a second round run-off presidential election between former prime minister Ibrahim Boubacar Keita, widely known as IBK, and ex-finance minister Soumaila Cisse on Sunday. REUTERS/Joe Penney (MALI - Tags: POLITICS ELECTIONS TPX IMAGES OF THE DAY) 

Poll workers count ballots in Bamako, Mali, August 11, 2013. Poll workers in Mali began counting votes in Sunday's high stakes presidential runoff, with former Prime Minister Ibrahim Boubacar Keita tipped to claim the difficult job of stabilizing the West African nation after more than a year of turmoil. REUTERS/Joe Penney (MALI - Tags: POLITICS ELECTIONS TPX IMAGES OF THE DAY) 

Men set up a stage for a campaign rally next to a poster for Malian presidential candidate Ibrahim Boubacar Keita (known as IBK) in Bamako, Mali, August 9, 2013. Mali will hold a second round run-off presidential election between IBK and Soumaila Cisse on Sunday. REUTERS/Joe Penney (MALI - Tags: POLITICS ELECTIONS TPX IMAGES OF THE DAY) 

A Malian national guardsman (L) takes up a post along a street outside the Grand Mosque before Eid al-Fitr prayers in Bamako August 8, 2013. The Eid al-Fitr festival marks the end of the Muslim holy fasting month of Ramadan. REUTERS/Joe Penney (MALI - Tags: RELIGION MILITARY TPX IMAGES OF THE DAY) 

A man walks out of a voting booth to cast his vote during the second round of presidential elections in Bamako August 11, 2013. Malians vote on Sunday in the second round of a presidential poll with a tough-talking ex-prime minister the favourite to win an election meant to offer the country a fresh start after a coup and Islamist rebellion last year. REUTERS/Joe Penney (MALI - Tags: POLITICS ELECTIONS TPX IMAGES OF THE DAY) 

Poll workers count the number of people who voted before counting ballots in Bamako August 11, 2013. Malians voted in a high stakes presidential runoff on Sunday with former Prime Minister Ibrahim Boubacar Keita tipped to claim the difficult job of stabilising the West African nation after more than a year of turmoil, war and an army coup. REUTERS/Joe Penney (MALI - Tags: POLITICS ELECTION) 

People cheer as Mali's presidential candidate Ibrahim Boubacar Keita leaves a polling station after voting during the second round of presidential elections in Bamako August 11, 2013. Former Prime Minister Keita was the favourite to win a presidential election on Sunday that Malians hope will restore stability in a country torn apart by last year's coup and Islamist insurgency. REUTERS/Joe Penney (MALI - Tags: POLITICS ELECTIONS) 

National guardsmen take up positions on the roof of the Grand Mosque during Eid al-Fitr prayers in Bamako August 8, 2013. The Eid al-Fitr festival marks the end of the Muslim holy fasting month of Ramadan. REUTERS/Joe Penney (MALI - Tags: RELIGION MILITARY TPX IMAGES OF THE DAY) 

Poll workers wait for voters during the second round of presidential elections in Bamako August 11, 2013. Malians vote on Sunday in the second round of a presidential poll with a tough-talking ex-prime minister the favourite to win an election meant to offer the country a fresh start after a coup and Islamist rebellion last year. REUTERS/Joe Penney (MALI - Tags: POLITICS ELECTIONS TPX IMAGES OF THE DAY) 

Mali's presidential candidate Ibrahim Boubacar Keita casts his vote during the second round of presidential elections in Bamako, August 11, 2013. Former Prime Minister Keita was the favourite to win a presidential election on Sunday that Malians hope will restore stability in a country torn apart by last year's coup and Islamist insurgency. REUTERS/Joe Penney (MALI - Tags: POLITICS ELECTIONS) 

Presidential candidate Soumaila Cisse speaks at a news conference in Bamako, Mali, August 2, 2013. Mali's postwar election produced no clear winner and former Prime Minister Ibrahim Boubacar Keita will face ex-Finance Minister Cisse in a run-off due on August 11, the government said on Friday. REUTERS/Joe Penney (MALI - Tags: POLITICS ELECTIONS) 

A man walks in front of a poster for presidential candidate Ibrahim Boubacar Keita in front of Keita's campaign headquarters in Bamako, Mali, August 2, 2013. Former prime minister Keita came first in Mali's presidential election but will face ex-finance minister Soumaila Cisse in a run-off after he failed to secure an outright majority, the government said on Friday. REUTERS/Joe Penney (MALI - Tags: POLITICS ELECTIONS) 

Poll workers count ballots after the end of voting in Mali's presidential elections in Timbuktu July 28, 2013. REUTERS/Joe Penney (MALI - Tags: ELECTIONS POLITICS TPX IMAGES OF THE DAY) 

A man casts his vote during Mali's presidential election in Timbuktu, Mali, July 28, 2013. REUTERS/Joe Penney (MALI - Tags: ELECTIONS POLITICS TPX IMAGES OF THE DAY) 

Electoral officials sit at a polling station during Mali's presidential election in Timbuktu, Mali, July 28, 2013. REUTERS/Joe Penney (MALI - Tags: ELECTION POLITICS) 

A UN peacekeeper from Burkina Faso stands guard at the Djinguereber mosque, built in the 14th century, during a visit by a UN delegation on election day in Timbuktu, Mali, July 28, 2013. REUTERS/Joe Penney (MALI - Tags: ELECTIONS POLITICS MILITARY) 

Presidential candidate Ibrahim Boubacar Keita leads a rally on the last day of campaigning before Sunday's poll in Bamako, July 26, 2013. Picture taken July 26, 2013. REUTERS/Alain Amontchi (MALI - Tags: POLITICS ELECTIONS) 

A girl watches an electoral campaign rally for presidential candidate Dramane Dembele from a rooftop in Timbuktu July 26, 2013. Mali will hold presidential elections on Sunday. REUTERS/Joe Penney (MALI - Tags: ELECTIONS POLITICS) 

People search for their names on lists that indicate where to vote, in Timbuktu July 26, 2013. Mali will hold a presidential election on Sunday. REUTERS/Joe Penney (MALI - Tags: ELECTIONS POLITICS) 

A tailor looks up from his work next to a campaign poster of presidential candidate Ibrahim Boubacar Keita in Timbuktu July 24, 2013. Mali is due to hold presidential elections on Sunday. REUTERS/Joe Penney (MALI - Tags: POLITICS ELECTIONS BUSINESS TEXTILE) 

A girl watches performers at a campaign rally for presidential candidate Ibrahim Boubacar Keita in Timbuktu July 24, 2013. Mali is due to hold presidential elections on July 28. REUTERS/Joe Penney (MALI - Tags: POLITICS ELECTIONS) 

A boy climbs a wall to watch a campaign rally for presidential candidate Ibrahim Boubacar Keita in Timbuktu July 24, 2013. Mali is due to hold presidential elections on July 28. REUTERS/Joe Penney (MALI - Tags: POLITICS ELECTIONS) 

A woman holding a baby searches for her name on a list of eligible voters at an election center in Bamako July 23, 2013. Mali is due to hold presidential elections on Sunday. REUTERS/Joe Penney (MALI - Tags: POLITICS ELECTIONS TPX IMAGES OF THE DAY) 

A child walks past posters for presidential candidate Dramane Dembele plastered on a house in Bamako, July 22, 2013. Mali's interim President Dioncounda Traore met for the first time with members of two northern Tuareg separatist groups, provoking anger among many in the country's south as ethnic tensions rise ahead of a presidential poll on Sunday. REUTERS/Joe Penney (MALI - Tags: ELECTIONS POLITICS TPX IMAGES OF THE DAY) 

A man looks out while riding a bus, next to a poster of presidential candidate Soumaila Cisse, after a campaign rally for Cisse in Bamako, July 20, 2013. Mali is due to hold its presidential elections on July 28. REUTERS/Joe Penney (MALI - Tags: ELECTIONS POLITICS TRANSPORT SOCIETY TPX IMAGES OF THE DAY) 

Presidential candidate Soumaila Cisse stands in a studio before making a televised address in Bamako, July 20, 2013. Mali is due to hold its presidential elections on July 28. REUTERS/Joe Penney (MALI - Tags: ELECTIONS POLITICS TPX IMAGES OF THE DAY) 

Toronto Blue Jays' Jose Bautista (L) is backed off by a pitch Oakland Athletics catcher Stephen Vogt catches on the inside of the plate, in the fourth inning of their MLB American League baseball game in Toronto August 11, 2013. REUTERS/Fred Thornhill (CANADA - Tags: SPORT BASEBALL) 

Serena Williams of the U.S. holds the trophy after defeating Sorana Cirstea of Romania during their women's final tennis match of the Rogers Cup tennis tournament in Toronto, August 11, 2013. REUTERS/Mark Blinch (CANADA - Tags: SPORT TENNIS TPX IMAGES OF THE DAY) 

England's Ian Bell avoids a delivery from Australia's Ryan Harris during their fourth Ashes test cricket match at the Riverside cricket ground, Chester-Le-Street, northern England August 11, 2013. REUTERS/Nigel Roddis (BRITAIN - Tags: SPORT CRICKET TPX IMAGES OF THE DAY) 

Brittney Reese of the U.S. competes during the women's long jump final at the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 11, 2013. REUTERS/Dominic Ebenbichler (RUSSIA - Tags: SPORT ATHLETICS TPX IMAGES OF THE DAY)

Usain Bolt of Jamaica (C) crosses the finish line ahead of Michael Rodgers of the U.S. (R) and Aaron Brown of Canada in the men's 100 metres semi-final during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 11, 2013. REUTERS/Dylan Martinez (RUSSIA - Tags: SPORT ATHLETICS TPX IMAGES OF THE DAY)

Willem Coertzen of South Africa competes in the men's decathlon discus throw event during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 11, 2013. REUTERS/Fabrizio Bensch (RUSSIA - Tags: SPORT ATHLETICS)

An Artemis crew member waves while training for a Louis Vuitton Cup semi-final in San Francisco, California August 10, 2013. Italy's Luna Rossa sailed into the final of the America's Cup challenger series on Saturday, completing a 4-0 sweep over the grief-stricken Swedish syndicate Artemis. REUTERS/Noah Berger (UNITED STATES - Tags: SPORT YACHTING) 

Participants attend the annual "City2Surf" fun run in central Sydney August 11, 2013. According to organizers, more than 85,000 participants entered the race that covers 14 km (8.7 miles) from Sydney's central business district to Bondi Beach, and supports several charities around the country. REUTERS/Daniel Munoz (AUSTRALIA - Tags: SOCIETY SPORT ATHLETICS) 

A man takes a picture of himself among participants during the annual "City2Surf" fun run in central Sydney August 11, 2013. According to organizers, more than 85,000 participants entered the race that covers 14 km (8.7 miles) from Sydney's central business district to Bondi Beach, and supports several charities around the country. REUTERS/Daniel Munoz (AUSTRALIA - Tags: SOCIETY TPX IMAGES OF THE DAY SPORT ATHLETICS) 

A competitor is helped out from lake Balaton during the Fighters' Run competition in Zanka, 150 km (93 miles) west of Budapest, August 10, 2013. REUTERS/Laszlo Balogh (HUNGARY - Tags: SPORT SOCIETY) 

A competitor crawls through mud water during a Fighters' Run competition in Zanka, 150 km (93 miles) west of Budapest, August 10, 2013. REUTERS/Laszlo Balogh (HUNGARY - Tags: SOCIETY SPORT TPX IMAGES OF THE DAY) 

A competitor crawls through mud water during a Fighters' Run competition in Zanka, 150 km (93 miles) west of Budapest, August 10, 2013. REUTERS/Laszlo Balogh (HUNGARY - Tags: SOCIETY SPORT) 

Porto's Jorge Fucile (L) fights for the ball with Vitoria Guimaraes's David Addy during their Portuguese Super Cup soccer match at Aveiro's city stadium August 10, 2013. REUTERS/Rafael Marchante (PORTUGAL - Tags: SPORT SOCCER) 

Athletes compete in the men's 100 metre heat during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 10, 2013. REUTERS/Fabrizio Bensch (RUSSIA - Tags: SPORT ATHLETICS)

Blessing Okagbare of Nigeria competes in the women's long jump qualifying round during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 10, 2013. REUTERS/Fabrizio Bensch (RUSSIA - Tags: SPORT ATHLETICS)

Michael Schrader of Germany competes in the men's decathlon long jump event at the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 10, 2013. REUTERS/Dominic Ebenbichler (RUSSIA - Tags: SPORT ATHLETICS TPX IMAGES OF THE DAY)

A pole vaulter stands next to his tools as he competes in the men's pole vault qualifying round during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 10, 2013. REUTERS/Kai Pfaffenbach (RUSSIA - Tags: SPORT ATHLETICS)

Paris Saint-Germain's Zlatan Ibrahimovic (R) challenges Montpellier's Vitorino Hilton during their French Ligue 1 soccer match at the Mosson stadium in Montpellier, August 9, 2013. REUTERS/Philippe Laurenson (FRANCE - Tags: SPORT SOCCER TPX IMAGES OF THE DAY) 

San Diego Chargers cornerback Steve Williams (27, front R) breaks-up a touchdown pass to Seattle Seahawks receiver Brett Swain (16, front L) in the first half of their pre-season NFL football game in San Diego, California August 8, 2013. REUTERS/Mike Blake (UNITED STATES - Tags: SPORT FOOTBALL TPX IMAGES OF THE DAY) 

San Diego Chargers running back Ryan Mathews (24) dives for first down against the Seattle Seahawks during the first quarter of their pre-season NFL football game in San Diego, California August 8, 2013. REUTERS/Mike Blake (UNITED STATES - Tags: SPORT FOOTBALL TPX IMAGES OF THE DAY) 

Novak Djokovic of Serbia dons a wig and dances following his win over Denis Istomin of Uzbekistan at the Rogers Cup tennis tournament in Montreal, August 8, 2013. REUTERS/Christinne Muschi (CANADA - Tags: SPORT TENNIS) 

Milos Raonic of Canada hits a return to Juan Martin Del Potro of Argentina during their men's singles match at the Rogers Cup tennis tournament in Montreal August 8, 2013. REUTERS/Christinne Muschi(CANADA - Tags: SPORT TENNIS TPX IMAGES OF THE DAY) 

Tiger Woods (L) and Davis Love III, both of the U.S., look at their putts on the 13th green during the first round of the 2013 PGA Championship golf tournament at Oak Hill Country Club in Rochester, New York August 8, 2013. REUTERS/Jeff Haynes (UNITED STATES - Tags: SPORT GOLF)

Cars collide during competition in the Nation-Wide Demolition Derby taking place at the New Jersey State Fair Sussex County Farm and Horse Show in Augusta, New Jersey, August 4, 2013. Originally begun in the 1950's in the United States, Demolition Derbies have been popular at state and county fairs throughout the U.S. and have spread to western Europe and Asia. With the dwindling availability of older large American-made vehicles, smaller full-sized vehicles of the 1980's and 1990's are more frequently used today. A separate class of demolition derby for compact cars is increasing in popularity. The two day demolition derby at the New Jersey State Fair featured more than 100 cars and drivers from New Jersey and surrounding Northeastern states competing in cars dating from the1960's to the 2000's. Picture taken August 4, 2013. REUTERS/Mike Segar (UNITED STATES - Tags: SPORT MOTORSPORT SOCIETY) 

Real Madrid's Cristiano Ronaldo (L) hugs a fan who entered the pitch during regulation time against Chelsea in their Guinness International Champions final soccer match in Miami Gardens, Florida August 7, 2013. REUTERS/Andrew Innerarity (UNITED STATES - Tags: SPORT SOCCER TPX IMAGES OF THE DAY) 

New York Yankees Alex Rodriguez heads back to the dugout after being called out in the seventh inning while playing the Chicago White Sox in their American League MLB baseball game in Chicago, August 7, 2013. REUTERS/John Gress (UNITED STATES - Tags: SPORT BASEBALL TPX IMAGES OF THE DAY) 

A groundskeeper mows grass near the 18th green during a practice round for the 2013 PGA Championship golf tournament at Oak Hill Country Club in Rochester, New York August 7, 2013. REUTERS/Jeff Haynes (UNITED STATES - Tags: SPORT GOLF)

Volunteers take a break during a rehearsal for the opening ceremony of the 14th IAAF World Championships at the Olympic stadium in Moscow August 7, 2013. The event will be held from August 10 to 18. REUTERS/Fabrizio Bensch (RUSSIA - Tags: SPORT ATHLETICS) 

Washington Nationals shortstop Ian Desmond (R) is airborne after completing a double play against the Atlanta Braves in the eighth inning of their MLB National League baseball game in Washington August 6, 2013. The Braves' base runner Justin Upton is at left. REUTERS/Gary Cameron (UNITED STATES - Tags: SPORT BASEBALL TPX IMAGES OF THE DAY) 

Venus Williams of the U.S. reaches for a shot against Kirsten Flipkens of Belgium during their women's tennis match at the Rogers Cup tennis tournament in Toronto August 6, 2013. REUTERS/Mark Blinch (CANADA - Tags: SPORT TENNIS TPX IMAGES OF THE DAY) 

Winnipeg Bombers' Jovon Johnson tackles Marco Iannuzzi (L) of the B.C Lions during the first half of their CFL football game in Vancouver, British Columbia, August 5, 2013. REUTERS/Ben Nelms (CANADA - Tags: SPORT FOOTBALL TPX IMAGES OF THE DAY) 

An underwater picture shows the Oracle Team USA AC72 catamaran train in San Francisco Bay, California August 7, 2013. The Oracle Team will defend its America's Cup trophy on the beginning of September at San Francisco Bay. REUTERS/Peter Andrews (UNITED STATES - Tags: SPORT YACHTING) 

European long jump champion Eloyse Lesueur of France trains at the Louis II Stadium in Monaco May 9, 2013. Lesueur will participate in the world athletics championships in Moscow which will run from August 10 to 18. Picture taken May 9, 2013. REUTERS/Eric Gaillard (MONACO - Tags: SPORT ATHLETICS) 

The Riverside cricket ground is reflected in the sunglasses of Australia's Nathan Lyon during their fourth Ashes test against England in Chester-Le-Street, northern England August 11, 2013. REUTERS/Nigel Roddis (BRITAIN - Tags: SPORT CRICKET TPX IMAGES OF THE DAY)