FILE - In this March 17, 2013 file photo, Juan Martin del Potro, of Argentina, looks up as he towels off during his match against Rafael Nadal, of Spain, at the BNP Paribas Open tennis tournament in Indian Wells, Calif. World number seven Del Potro will not be fit to play the upcoming French Open while recovering from a virus.(AP Photo/Mark J. Terrill, File)
FILE - In this March 17, 2013 file photo, Juan Martin del Potro, of Argentina, looks up as he towels off during his match against Rafael Nadal, of Spain, at the BNP Paribas Open tennis tournament in Indian Wells, Calif. World number seven Del Potro will not be fit to play the upcoming French Open while recovering from a virus.(AP Photo/Mark J. Terrill, File)
Washington Nationals' Bryce Harper hits a RBI sacrifice fly during the ninth inning against the Los Angeles Dodgers on Saturday, April 28, 2012, in Los Angeles. (AP Photo/Mark J. Terrill)
A helicopter makes a water drop on flames as a wildfire burns along a hillside in Thousand Oaks, Calif., Thursday, May 2, 2013. A Ventura County Fire Department spokeswoman said the blaze that broke out Thursday morning near Camarillo and Thousand Oaks, 50 miles west of Los Angeles, had spread to over 6,500 acres, forcing evacuations of nearby neighborhoods. (AP Photo/Mark J. Terrill)
A helicopter makes a water drop on flames as a wildfire burns along a hillside in Thousand Oaks, Calif., Thursday, May 2, 2013. A Ventura County Fire Department spokeswoman said the blaze that broke out Thursday morning near Camarillo and Thousand Oaks, 50 miles west of Los Angeles, had spread to over 6,500 acres, forcing evacuations of nearby neighborhoods. (AP Photo/Mark J. Terrill)
A helicopter makes a water drop on flames as a wildfire burns along a hillside in Thousand Oaks, Calif., Thursday, May 2, 2013. A Ventura County Fire Department spokeswoman said the blaze that broke out Thursday morning near Camarillo and Thousand Oaks, 50 miles west of Los Angeles, had spread to over 6,500 acres, forcing evacuations of nearby neighborhoods. (AP Photo/Mark J. Terrill)
A fire vehicle stands by as a wildfire burns along a roadside in Thousand Oaks, Calif., Thursday, May 2, 2013. A Ventura County Fire Department spokeswoman said the blaze that broke out Thursday morning near Camarillo and Thousand Oaks, 50 miles west of Los Angeles, had spread to over 6,500 acres, forcing evacuations of nearby neighborhoods. (AP Photo/Mark J. Terrill)
A helicopter makes a water drop on flames as a wildfire burns along a hillside in Thousand Oaks, Calif., Thursday, May 2, 2013. A Ventura County Fire Department spokeswoman said the blaze that broke out Thursday morning near Camarillo and Thousand Oaks, 50 miles west of Los Angeles, had spread to over 6,500 acres, forcing evacuations of nearby neighborhoods. (AP Photo/Mark J. Terrill)
