This move leaves your opponent exposed and enables you to stay in a position to counter punch with either hand.

BBC: DEFENCE

"It wouldn't be far off the mark for the press to carry the story 'Greenspan Takes Lid Off of Punch Bowl, ' because your position in the past has consistently been that the surpluses should be devoted to reducing the debt, " said Maryland Senator Paul Sarbanes.

BBC: Momentum builds for US tax cuts

Oosthuizen spent most of the round, after his three-under-par miracle on the second, protecting his position, whereas Watson didn't punch his way into a share of the lead until the 16th hole.

WSJ: Masters 2012: Bubba Watson Miracle Shot Lets Him Trump All Comers