Boxer Floyd Mayweather delivers late into the night

No one does a news conference quite like Floyd Mayweather, even if it's approaching midnight. So what if the undisputed and undefeated pound-for-pound champion was grounded at a commuter airport outside of New York for more than four hours because of weather? That minor inconvenience wasn't going to keep the highest paid athlete on the planet away from the District for the second stop on a five-city tour promoting Mayweather's rematch with Marcos Maidana on Sept. 13 in Las Vegas.