Reaching the last 48 of the 1984 World Championship was to be the furthest that Mikkelsen progressed in a major tournament as a professional.[8] His highest snooker world ranking was 37.[1] He lost his professional status after withdrawing from a play-off match against the then-amateur James Wattana in 1989.[9]
In 1996, Mikkelsen won the Canadian Open Nine-ball pool championship by defeating Paul Potier 15–14 in the final.[10]
^ abcdeHayton, Eric; Dee, John (2004). The CueSport Book of Professional Snooker: The Complete Record & History. Lowestoft: Rose Villa Publications. p. 715. ISBN978-0954854904.
^Hayton, Eric; Dee, John (2004). The CueSport Book of Professional Snooker: The Complete Record & History. Lowestoft: Rose Villa Publications. p. 146. ISBN978-0954854904.
^"Mikkelsen recovers". The Vancouver Sun. Vancouver, British Columbia. 22 October 1976. p. 36.
^Hale, Janice (1987). Rothmans Snooker Yearbook 1987–88. Aylesbury: Queen Anne Press. p. 299. ISBN0356146901.