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.