Justin Timberlake and Jay-Z, not pictured, perform in concert at the Candlestick Park in San Francisco, Calif., on Friday, July 26, 2013. (Ray Chavez/Bay
Justin Timberlake and Jay-Z, not pictured, perform in concert at the Candlestick Park in San Francisco, Calif., on Friday, July 26, 2013. (Ray Chavez/Bay Area News Group) ( RAY CHAVEZ )