A woman in a wheat field cheers on a pack of riders as they cycle during the fourteenth stage of the 95th Tour de France between Nimes and Digne-Les-Bains, July 19, 2008. (REUTERS/Thierry Roge)

Mark Cavendish of Great Britain, center, grimaces as he strains to win the 13th stage of the Tour de France between Narbonne and Nimes, southern France, Friday July 18, 2008. (AP Photo/Laurent Rebours)

Russian team leader Denis Menchov (Rabobank/Ned), competes, on July 26, 2008, in the 53 km individual time-trial and twentieth stage of the 2008 Tour de France run between Cerilly and Saint-Amand-Montrond. Menchov clocked in 1:05:45. (PATRICK HERTZOG/AFP/Getty Images)

The pack passes through the Lys canyon near the village of Saint-Martin-Lys during the 12th stage of the Tour de France between Lavelanet and Narbonne, southern France, Thursday July 17, 2008. (AP Photo/Christophe Ena)

Stage winner Marcus Burghardt (R) of Germany and team Columbia rides with Romain Feillu of France and team Agritubel in the breakaway group during stage eighteen of the 2008 Tour de France from Bourg-d'Oisans to Saint-Etienne on July 24, 2008 in Saint-Etienne, France. (Jasper Juinen/Getty Images)

The pack rides, on July 22, 2008, during the 157 km sixteenth stage of the 2008 Tour de France run between Cuneo (Italy) and Jausiers. French Cyril Dessel (AG2R/Fra) won ahead of French Sandy Casar (Francaise des Jeux/Fra) and Spanish David Arroyo (Caisse d'Epargne/Spa). (PASCAL PAVANI/AFP/Getty Images)

Frank Schleck of Luxemburg, wearing the overall leader's yellow jersey speeds down Croix de Fer pass during the 17th stage of the Tour de France between Embrun and l'Alpe-d'Huez, French Alps, Wednesday July 23, 2008. Schleck lost the jersey to his teammate Carlos Sastre of Spain. (AP Photo/Christophe Ena)

The yellow jersey group rides, on July 22, 2008, during the 157 km sixteenth stage of the 2008 Tour de France run between Cuneo (Italy) and Jausiers. French Cyril Dessel (AG2R/Fra) won ahead of French Sandy Casar (Francaise des Jeux/Fra) and Spanish David Arroyo (Caisse d'Epargne/Spa). (JOEL SAGET/AFP/Getty Images)

Frank Schleck of Luxemburg, wearing the overall leader's yellow jersey, center, Sylvester Szmyd of Poland, rear, and Carlos Sastre of Spain, front, speed down Bonette_Restefond pass during the 16th stage of the Tour de France between Cuneo, northern Italy, and Jausiers, French Alps, Tuesday July 22, 2008. (AP Photo/Bas Czerwinski)

Riders speed down Bonette-Restefond pass during the 16th stage of the Tour de France between Cuneo, northern Italy, and Jausiers, French Alps, Tuesday July 22, 2008. (AP Photo/Bas Czerwinski)

Frank Schleck of Luxemburg, wearing the overall leader's yellow jersey,and Jerome Pineau of France, rear, speed down Galibier pass during the 17th stage of the Tour de France between Embrun and l'Alpe-d'Huez, French Alps, Wednesday July 23, 2008. (AP Photo/Christophe Ena)

Picture shows the shadow of a cycling racer riding in the pack, on July 18, 2008, during the 182 km thirteenth stage of the 2008 Tour de France run between Narbonne and Nimes. AFP PHOTO JOEL SAGET (JOEL SAGET/AFP/Getty Images)

The pack with Frank Schleck of Luxemburg, wearing the overall leader's yellow jersey, speeds down Galibier pass during the 17th stage of the Tour de France between Embrun and l'Alpe-d'Huez, French Alps, Wednesday July 23, 2008. (AP Photo/Bas Czerwinski)

Fifteenth in the overall standings, Spain's 2006 Tour de France champion Oscar Pereiro (Caisse d'Epargne/Spa) receives medical assistance, after he toppled over a security barrier on his way down Col Agnel (crossing point between France and Italy), falling several meters onto the road below, on July 20, 2008, during the 183 km fifteenth stage of the 2008 Tour de France run between Embrun and Prato Nevoso (Italy). Pereiro suffered a fractured arm in the fall and underwent surgery shortly after. (JOEL SAGET/AFP/Getty Images)

Cyclists compete in the Alps during the 17th stage of the Tour de France cycle race, a 210.5-km mountain ride from Embrun to l'Alpe d'Huez, July 23, 2008. (REUTERS/Bogdan Cristel)

Silence Lotto team rider and leader's yellow jersey Cadel Evans of Australia holds the wheel of a bicycle at the start of the 14th stage of the 95th Tour de France between Nimes and Digne-Les-Bains, July 19, 2008. (REUTERS/Bogdan Cristel)

Spanish team leader Alejandro Valverde (Caisse d'Epargne/Spa) rides in the pack, on July 16, 2008, during the 167,5 km eleventh stage of the 2008 Tour de France run between Lannemezan and Foix. Norwegian Kurt Asle Arvesen (CSC/Den) won ahead of Swiss Martin Elmiger (AG2R/Fra) and Italian Alessandro Ballan (Lampre/Ita). (JOEL SAGET/AFP/Getty Images)

The pack rides, on July 23, 2008, during the 210,5 km seventeenth stage of the 2008 Tour de France run between Embrun and L'Alpe d'Huez. (JOEL SAGET/AFP/Getty Images)

Stage winner Sylvain Chavanel (R) of France and team Cofidis celebrates flanked by the runner up Jeremy Roy of France and team Francaise des Jeux during stage nineteen of the 2008 Tour de France from Roanne to Montlucon on July 25, 2008 in Montlucon, France. (Jasper Juinen/Getty Images)

The pack passes through a forest during the 19th stage of the Tour de France between Roanne and Montlucon, central France, Friday July 25, 2008. (AP Photo/Bas Czerwinski)

Race leader Cadel Evans of Australia and team Silence-Lotto reacts on the finish line after losing his yellow jersey to Frank Schleck of Luxembourg, during stage fiftheen of the 2008 Tour de France from Embrun to Prato Nevoso on July 20, 2008 in Prato Nevoso, Italy. (Jasper Juinen/Getty Images)

AG2R team rider Cyril Dessel of France cycles in the Alps mountains during the sixteenth stage of the 95th Tour de France between Cuneo and Jausiers, July 22, 2008. (REUTERS/Bogdan Cristel)

Italian Manuel Quinziato (Liquigas/Ita) tosses a water bottle as he rides in the pack, on July 20, 2008, during the 183 km fifteenth stage of the 2008 Tour de France run between Embrun and Prato Nevoso (Italy). (JOEL SAGET/AFP/Getty Images)

French rider Jimmy Engoulvent (C) (Credit Agricole/Fra) falls on the ground as Spanish Gorka Verdugo (L) (Euskatel/Spa) rides over, on July 17, 2008, during the 168,5 km twelfth stage of the 2008 Tour de France run between Lavelanet and Narbonne. Engoulvent was able to mount a new bike and catch up to the pack. (PASCAL PAVANI/AFP/Getty Images)

The pack speeds over Concorde square during the 21st stage of the Tour de France between Etampes and Paris, France, Sunday July 27, 2008. (AP Photo/Bas Czerwinski)

2008 Tour de France winner Spanish co-team leader Carlos Sastre (CSC/Den) waves a Spanish flag as he celebrates on the Champs-Elysees Avenue during a honour lap, on July 27, 2008, at the end of the 143 km twenty-first and last stage of the 2008 Tour de France run between Etampes and Paris Champs-Elysees. (JOEL SAGET/AFP/Getty Images)