Golf Betting Question

[relaxwithtrudy]

This morning I discovered some extra money in my sportsbetting.com account. I wasn't able to play any poker or blackjack, so I looked for something to bet on. The only thing that was starting soon was some golf tournament. I ended up putting all my money on Padraig Harrington over KJ Choi. Harrington was at -0.5. I've never bet on golf before, so I have a question. Does Harrington have to beat Choi by one stroke TODAY or overall? Probably a dumb question, but I have to ask. Thanks guys!