Dutch cyclist Mathieu van der Poel has had his convictions for common assault overturned by a judge at Sydney's Downing Centre District Court.

The 27-year-old pleaded guilty to the common assault of two teenage girls in Sydney on the eve of the UCI Road World Championships finale in September.

Van der Poel was subsequently charged on two counts after an altercation with the pair, aged 13 and 14, whom he alleges to have been knocking on his hotel room door.

He was also fined 1,500 AUD, though he appealed both the conviction and fine, and Judge Ian Bourke SC ruled in the Alpecin-Deceuninck rider's favour in Tuesday's hearing.

The judge said Van der Poel's action had been in "response to annoying and invasive conduct" by the girls.

Van de Poel's lawyer Michael Bowe told NCA NewsWire: "He didn't need a conviction. He's a dedicated sportsman and cyclist. It's important these matters were dismissed."

Tour de France and Giro d'Italia stage winner Van der Poel had been among the favourites to win the World Championship prior to dropping out with 230 kilometres to go.

Belgium's Remco Evenepoel went on to win the competition.

"I ran the argument on the basis of loss to Mathieu – he had one opportunity in his life to win the world championships and he's lost that opportunity," Bowe added. 

"He'd trained for that opportunity. He'd let his country down, he'd let his team down."

Van der Poel has two wins in three cyclo-cross races so far this season, prevailing at the UCI World Cup rounds in Hulst and Antwerp.