A jury on Friday (Saturday NZ time) found the former Worcestershire county all-rounder guilty of oral rape following a night out in April 2017 but cleared him of a further count of rape relating to the same victim.
Hepburn sighed and then slumped into his seat, covered his face with his hands and sobbed after the unanimous guilty verdict was returned.
Bailing Hepburn following the decisions, the judge, Jim Tindal, told the cricketer: "I am suspending your case for the preparation of a pre-sentence report".
In her closing speech to the jury, prosecutor Miranda Moore QC suggested that Hepburn's desperation to "score" in the WhatsApp game may have overtaken his good sense.
The complainant, who can not be identified, told the court she was left shocked and distressed after opening her eyes and realising she was having sex with Hepburn and not Clarke, who was asleep elsewhere in the flat.
After 10 minutes, she realised it was Hepburn when she heard his "thick Australian accent".
Hepburn and Clarke set up an "intense laddish" WhatsApp group called "Stat Chat" in the days before the attack. "There is only one sentence that can properly be handed down in this case, and a custodial sentence is inevitable", the judge said.
"I was confused. It was no different to a normal sexual encounter".
Hepburn conceded he sent "nauseating, shocking and humiliating" WhatsApp messages while setting the principles of the sexual triumph competition.
Prosecutor Ms Miranda Moore QC said earlier in the retrial: "A sleeping girl can not consent". She woke to find Hepburn straddling her while she was still "in a daze" and pushed him away before running from the flat where she was found in a state of distress by a passer-by.
"He would have known she was with his mate".
Worcestershire chairman Fanos Hira said in a statement on the club's website that they were appalled by the details reported.
Police Detective Chief Inspector Ian Wall said Hepburn had been in a position of trust and power and the victim had shown great courage and strength in coming forward.
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