Career
He has hold several Finnish national records in both long course and short course. He participated in the Summer Olympics in Athens 2004 and Beijing 2008. Rajakylä finished third in the semi-finals of 50m butterfly at the European LC Championships 2006 in Budapest, Hungary, but was left on sixth position in the finals.
He came in last in each of his personal finals.
In April 2009 Rajakylä announced that he quits his swimming career. Rajakylä has hold Finnish national records in following events:
Rajakylä has also set the world record for the 24-hour swim along with other Finnish swimmers in September 2005.