Noted American psychologist, Dr Bob Rotella, had a word for it. “Contagion can be a powerful factor in sport,” he said, as we stood behind the 18th green at Royal St George’s on Sunday, while thousands applauded Darren Clarke’s remarkable victory in the Open Championship.

Rotella talked of how easily influenced golfers can be by what goes on around them. Like the amazing length that a certain player appears to be getting out of a new driver.  Or how another player seems incapable of mi…

By Dermot Gilleece

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