So often and inevitably are people chucked out, it would save a lot of time and heartbreak if, before each Games, the chief judge waited at Mexico City airport and showed his bat to the team while they were checking in their luggage. Every time someone took the lead today, out they went. Oddly for one from such a ping pong-loving nation, the sight of the bat sent Liu, of China, into floods of tears. Perrone, of Italy, was more resolute. When she saw bat, she stopped for a moment but then jogged back into the lead, like the riderless horse in the Grand National, finally retiring near the end.