Jurors were revealed to Clarke left his room to be debilitated in a restroom, where he go out, leaving the lady snoozing on a sleeping pad in his room.
She told police that after 10 minutes of sexual activity with Hepburn, he spoke in a "thick" Australian accent and she realised he was not Mr Clarke.
A distraught Hepburn was then seen slumping into his seat, covering his face with his hands before sobbing. "There is only one sentence that can properly be handed down in this case, and a custodial sentence is inevitable".
The woman, in her statement, said that she was with Hepburn's roommate - Nottinghamshire batsman Joe Clarke - before waking up to find out that the former was straddling her, reportedBBC.
Alex Hepburn, 23, was warned a jail sentence is inevitable for the attack on the the dozing victim, committed just days after he set the rules of the contest to have sex with as many new partners as possible.
Hepburn conceded he sent "nauseating, shocking and humiliating" WhatsApp messages while setting the principles of the sexual triumph competition.
"I am adjourning your case for the preparation of a pre-sentence report".
That exchange was explained in court by Hepburn as being "light" use of the word rape, used jokingly in an attempt to get under Clarke's skin.
The judge said that his provisional view was that verdicts indicated Hepburn's claim that the woman had consented was "unreasonable".
Hepburn had denied both charges.
"It would not be a consideration to you to abandon you under any bogus impression with regards to the motivation behind that report".
Worcestershire County Cricket Club chairman Fanos Hira said the club was appalled by the details reported in the case and had taken decisive action immediately after they learned of Hepburn's arrest.
"WCCC continues to work alongside both the European Central Bank and PCA focusing on education, welfare and development programmes for all staff within the game".
Ms Heeley, who said Hepburn was not proud of the "deeply unpleasant" WhatsApp messages, said of the woman's evidence: "I lost count of the number of times she said in answer to questions from me "I don't remember".
They would rate their sexual encounters with girls who were known as "freshies" or "reheats", depending on if they had slept with them before.
Game of Thrones Season 8
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Severe weather possible late tonight & Sunday
Damage was reported early Saturday evening in Vicksburg, Mississippi, as severe thunderstorms rumbled through the city. Downed trees and damage to buildings and a transmission tower were reported, said meteorologist Monique Sellers.