Tiger Woods suffered a blow almost as cruel as Guan's on the 15th hole, when his perfectly judged approach shot hit the pin and bounced into the water.
The values are shown by a score panel along the bottom of the target, while the position is shown by inserting an orange 'spotting disk' into the shot hole using a pin.
Impressive teenage midfielder Jay Spearing was involved in their two other best attacking moves of the half, firstly forcing keeper Krul into a low save with a 25-yard shot and then later provided a superb pin-point cross from the right which Lucas headed straight at the United keeper from 10 yards out.
Pin's tenacious style saw her run down every shot she could reach and Williams became frustrated at being unable to finish off points which should have been hers.