The appeal was lodged in the Queenstown District Court yesterday and will be processed and heard in the High Court at Invercargill at a date to be confirmed.
Smoothy (22) was convicted in the Queenstown District Court last week for punching John O'Sullivan in a late-night altercation at a bar in Wanaka in October.
Mr O'Sullivan had offered to trade a mobile phone for one of Smoothy's female friends. He suffered lacerations to his face as a result of the punch.
Smoothy's lawyer, Nicole Murphy, argued in court that a conviction could jeopardise the skiing career of the two-time winner of New Zealand's Big Mountain Freeski Open.
A submission to discharge without conviction was turned down by Judge Dominic Flatley, who said Smoothy's behaviour would not be tolerated.
The free-skier, previously dealt with by the police diversion scheme, was not eligible to apply again for his recent assault. Smoothy could not be contacted yesterday by the Otago Daily Times.
