Karl Etherington who fights in mixed martial arts around the world has been jailed for 20 weeks after he admitted sending offensive and menacing messages to his ex partner.
In a drunken rage, the 41 year-old - who was once in line for the British Olympic Judo team before he turned to mixed martial arts - sent messages to his ex threatening her life and saying he would burn down her home.
Etherington was the subject of a suspended jail term when he committed the offences, Blackpool magistrates heard.
That had been imposed when he hit a man in a bar and assaulted a traffic warden by placing a parking ticket on his head.
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His barrister Julie Taylor told magistrates: "He admits making the threats but says he would never have carried them out.
“He runs a gym business employing four people and is about to take over a gym at Blackpool Football Club where he again will be employing people.”
As well as imposing the 20 week jail term, magistrates ordered Etherington to pay a Â£115 victim’s surcharge and imposed a 12 month restraining order forbidding him to contact his former partner or go near her home or business.
After the hearing his legal team said he would appeal the sentence.