	On 30 September 2005, Piispanen made his professional debut by winning a four-round unanimous decision against Arturs Jaskuls, who also debuted. Piispanen fought for his first regional title against European Union super-lightweight champion Giuseppe Lauri on 19 December 2008, but was stopped in six rounds. Two years later, on 18 July 2010, Piispanen fought again for the now-vacant title, stopping Emanuele de Prophetis in four rounds to become champion.