Battling summer heat and dust, child jockey Purevsurengiin Togtokhsuren rides his stallion across the vast Mongolian steppe.

Despite being only 13 years old, Togtokhsuren is riding for the fifth time in the national races for Mongolia's summer festival, known as Naadam, lining up against some 170 other child jockeys.

An award-winning Japanese architect on Thursday called on officials to rein in spiraling costs for Tokyo's 2020 Olympic stadium which put it on track to become the world's most expensive sporting showpiece.

Construction costs have ballooned by nearly twice the original budget to 252 billion yen ($2.03 billion), sparking an uproar over the price tag for a project that was already lambasted by some critics for its futuristic look.

While the battle for the yellow jersey should be dominating thoughts ahead of Thursday's final Pyrenean stage, it has been doping, the heat and even Lance Armstrong hogging attention at the Tour de France

After two baking hot days in the mountains in which several riders -- including Alberto Contador and Vincenzo Nibali -- complained of being unable to breath, Thursday's 195km stage 12 from Lannemezan to Plateau de Beille promises to be even hotter, and harder.

Disgraced American cyclist Lance Armstrong will be back on the Tour de France roads for a controversial charity ride Thursday, his first appearance since being stripped of his seven titles.

He will cycle two stages of the Tour for a leukemia charity -- from Muret to Rodez on Thursday and from Rodez to Mende on Friday -- a day ahead of the competing riders.

Top Kenyan athletes including former world marathon record holders Wilson Kipsang and Tegla Loroupe set off Wednesday on a 22-day "Walk for Peace" against ethnic violence, organizers said.

Cattle rustling and revenge killings between rival communities are common in Kenya's remote and impoverished northern regions, an area awash with automatic weapons.

Former Brazil star Rivaldo and his son both scored in the same match in the Brazilian league's second division on Tuesday.

The 43-year-old Rivaldo scored once and his 20-year-old son, Rivaldo Jr., netted twice in Mogi Mirim's 3-1 win over Macae.

Torn by civil war and facing a humanitarian crisis, South Sudan is finding hope on the sporting front: The world's newest nation is in line for international recognition that would allow it to send a team to next year's Olympics in Rio de Janeiro.

Gaining Olympic status, some say, could help bolster national pride and unite warring tribal factions in the fractured northeastern African country, where about 50,000 people have been killed in fighting in the past year-and-a half.

Raheem Sterling became the most expensive English footballer ever on Tuesday after joining Manchester City from Premier League rival Liverpool in a drawn-out move costing 49 million pounds ($76 million).

The England winger signed a five-year deal at City after forcing his way out of Anfield following several fractious months, during which he rejected a new contract and publicly questioned the club's ambitions.

Former Barcelona captain Xavi Hernandez hit out on Tuesday at Real Madrid for the "lame" way they handled the departure of their star goalkeeper, his friend Iker Casillas.

"To me, his departure from Real Madrid stinks. It's a pity. It seems lame," Xavi wrote in an open letter published in the Catalan newspaper La Vanguardia.

The Russian Football Union says national team coach Fabio Capello has resigned following a dispute over back pay.

In a statement released Monday, the Russian Football Union did not disclose the financial terms of the settlement but expressed gratitude to Capello for his work.