#4 Peter Graf
Peter Graf is probably a name that needs no introduction.
Peter, often dubbed ‘Papa Merciless’, was the Robin to Steffi Graf’s Batman. While he is one of the bad boys on this list, the fact that he drove Steffi to phenomenal success cannot be ignored.
He was her coach, manager and chaperone all rolled into one. Steffi, driven on by her tempestuous father, won an astounding 22 Grand Slam singles titles – a record that stands to this day (though Serena Williams has matched it).
What made Peter Graf a bad boy is the fact that he used to control Steffi’s tournament and practice schedule, as well as her finances, and even her sleeping and waking hours. But the pair fell out in 1997 when he was sentenced to nearly four years in prison, having being convicted of tax evasion on nearly £5 million of her earnings. Though the ugly episodes have not endeared Peter to the public who see him as a pushy parent, Peter Graf certainly was a big factor in his daughter’s record-breaking career.
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