Nicky Hayden of USA and Ducati Marlboro Team rounds the bend during the first day of practice of Doha GP at Losail Circuit on April 5, 2012 in Doha, Qatar.

A boy hugs a greyhound that will be placed in temporary foster care at his home in Los Angeles Feb. 11, 2012. Fast Friends, a greyhound adoption group based outside Los Angeles, is committed to finding homes for retired greyhounds from the Caliente racetrack in Tijuana, Mexico.

Greyhounds compete at the Caliente racetrack in Tijuana Feb. 18, 2012. All the dogs have been imported from the United States where only seven states still operate dog tracks. Circuit rules demand that all race dogs retire at the age of five, though some run well into their sixth year.

Greyhounds stand at a fence in a kennel at the Caliente racetrack in Tijuana Feb.11. Every few months, volunteers orchestrate an event called "Retirement Day" where older, slower dogs or dogs that have been weakened from frequent leg injuries officially leave their racing days behind and are given up for adoption.

Two adopted greyhounds relax in their new home in Whittier, Calif. Feb. 21, 2012.

NASCAR Nationwide Series driver Danica Patrick speaks to the media after winning the pole for the Nationwide DRIVE4COPD 300 at Daytona International Speedway in Daytona Beach, Florida, Feb. 24, 2012.

Danica Patrick drives her car during qualifying for Saturday's NASCAR Nationwide Drive4COPD 300 Friday.

Danica Patrick's car slides down the track after a crash during the first of two NASCAR Daytona Duel 150 qualifying auto races in Daytona Beach, Fla., Thursday, Feb. 23, 2012.

Honda's MotoGP rider Dani Pedrosa (26) of Spain leads the pack during the first lap as Suzuki's Alvaro Bautista (blue) of Spain falls from his bike during the Valencia Motorcycle Grand Prix at the Ricardo Tormo racetrack near Valencia, Spain on Nov. 6, 2011.

Team Ducati riders Randy De Puniet (14), Nicky Hayden (69), and Valentino Rosssi (46) and Suzuki rider Alvaro Bautista (19) lose control in the first turn of the first lap.

Ducati rider Nicky Hayden from US, slides through the gravel on the first turn.

Casey Stoner steers his Honda to victory during Spain's Valencia Motorcycle Grand Prix on Nov. 6, 2011.

A spectator leaves the field after the Melbourne Cup at Flemington racecourse in Melbourne, Australia, on November 1.

A lone spectator rummages through litter left behind after the Melbourne Cup races on November 1.

Brazilian Formula One driver Felipe Massa of Scuderia Ferrari in action during the second training session at the Italian Formula One circuit in Monza, Italy, 09 September 2011. The Grand Prix of Italy will take place on 11 September 2011.

Ferrari Formula One driver Fernando Alonso of Spain has a pit stop during the British F1 Grand Prix at Silverstone, central England, July 11.

Fernando Alonso of Spain and Ferrari drives on his way to winning the British Formula One Grand Prix at the Silverstone Circuit on July 10, in Northampton, England.

Fernando Alonso of Spain and Ferrari celebrates on the podium after winning the British Formula One Grand Prix at the Silverstone Circuit on July 11.

Ben Ainslie of Great Britain in action during a Finn class race on day two of the Skandia Sail For Gold Regatta at the Weymouth and Portland National Sailing Academy on June 7 in Weymouth, England. This set of races is the sixth regatta of the 2010-11 ISAF Sailing World Cup.

Robert Scheidt and Bruno Prada of Brazil lean over the edge of their boat during a Star class race at the Wemouth and Portland National Sailing Academy on June 7.

Reindeers and their jockeys during the Reindeer Cup Championship Drives 2011 in Inari, Lapland, northern Finland, on March 19 There are 51 Reindeer Herding Cooperatives in Finland of which 20 took part in the 2011 Cup. When autumn arrives reindeers are separated. Some go to the slaughterhouse, other are kept for breeding and a few males are neutered and trained as work reindeers, mainly for pulling sledges and racing. Once that has been done, local breeder cooperatives like to find out who owns the fastest and strongest reindeer. With the onset of spring, the cooperatives hold meetings to review the events of the past year.

Two childen on a sled watch the Reindeer Cup Championship Drives.

Reindeers pull their jockeys during the Reindeer Cup Championship Drives 2011 in Inari, Lapland, northern Finland, March 19.

A man walks in specially made shoes at the Reindeer Cup Championship Drives.