Green Ball: Eco-Friendly Glamour Besides becoming the first black president, Barack Obama may well be the greenest. He says he wants to "green up" the energy economy.

The Rules of Golf clearly addresses what to do if you hit a shot from off a green and it hits another ball on the green.Rule 11.1 says to play your ball as it lies. Or, in Oosthuizen’s situation ...

The Masters runs by USGA rules, and USGA rules only state that a player must use a conforming ball as approved by the organization. Of the approximately 1,200 conforming balls , about 70 are pink.