Table:
text: Finnish National Badminton Championships
Past winners
Past winners
Year_ Mens_singles Womens_singles Mens_doubles Womens_doubles Mixed_doubles
1961 Kaj Lindfors Maritta Petrell Kaj Lindfors Harry Saren Marita Petrel Lisbeth Baumgartner Kaj Lindfors Ann-Louise von Essen
1962 Kaj Lindfors Maritta Petrell Kaj Lindfors Kaj Osterberg Marita Petrel Lisbeth Baumgartner Kaj Lindfors Ann-Louise von Essen
1963 Bengt Soderberg Maritta Petrell Bengt Soderberg Marten Segercrantz Marita Petrel Sanni Jaakkola Marten Segercrantz Lisbeth Baumgartner
1964 Bengt Soderberg Maritta Petrell Bengt Soderberg Marten Segercrantz Marita Petrel Inger German Marten Segercrantz Ann-Louise von Essen
1965 Rainer Brander Maritta Petrell Bengt Soderberg Marten Segercrantz Marita Petrel Terttu Weckström Marten Segercrantz Lisbeth Baumgartner
1966 Rainer Brander Maritta Renqvist Eero Loikko Marten Segercrantz Wiola Hostbacka Ann Christine Tengstrom Marten Segercrantz Ann-Louise von Essen

Question: Who is the men's singles at the Finnish National Badminton Championships, with the men's doubles being Kaj Lindfors and Kaj Osterberg?