Cycling

PINTO, Spain - Three-time Tour de France champion Alberto Contador challenged cycling authorities on Saturday to freeze his urine and blood samples until technology can show he rode clean in this year's race and disprove his positive test for clenbuterol.

MEXICO CITY - Pedaling placidly, black-suited businessmen and women in dresses and high heels wheel shiny red bikes between growling green buses, serenaded by shrill police whistles and coughing diesel trucks, the morning sunlight filtering through yellow smog.