Photo Municipal workers sprayed insecticide around Rio de Janeiro in January, part of the effort to prevent the spread of the Zika virus. Credit Pilar Olivares/Reuters How confident is Scott Blackmun, the chief executive of the United States Olympic Committee, that the Zika virus will not ruin the Rio Olympics or render them unsafe for…

Photo Jenrry Mejia, pictured at his lawyer’s office on Thursday, is trying to fight his lifetime ban from baseball after three failed tests for performance-enhancing substances. Credit Christopher Gregory for The New York Times Jenrry Mejia, the Mets pitcher who was permanently barred from baseball after three failed doping tests, claims that he was the…

Photo Sam Groth of Australia stretched for a forehand against John Isner of the United States in their Davis Cup match on Friday on grass in Melbourne, Australia. Credit Andrew Brownbill/Associated Press As the Australians and the Americans continued their first-round Davis Cup match on grass at historic Kooyong Stadium in Melbourne, tennis officials confirmed…