Oct 28 (Reuters) - World number one Rory McIlroy could have a slight edge when he faces Tiger Woods in an 18-hole medal match in China on Monday, having played two holes at the Jinsha Lake course last year. McIlroy will have a point to prove when the world's top two meet in Zhengzhou after being crushed by six strokes by Woods in the World Golf Final in Turkey the week after the Ryder Cup. "We ...