I recall reading something about Nasty (Nastase). one year he went to England and took down a couple of big names on a small grass event going into Wimbledon.
he said---but most likely jokingly---he could just toy with guys like Connors and Borg.
they say that Nasty was a party animal. he hit #1 in 1973 if I am not mistaken. we can double check that.