Career
Rosenholm made his Association of Tennis Professionals main draw debut at the 2011 Swedish Open, partnering Carl Bergman, but they lost in the first round to the fourth seeds. Rosenholm was given a wildcard to the 2012 If Stockholm Open where in the first round he defeated world Number. 47 Gaël Monfils, 6–3, 1–6, 6–3.
In the second round he lost to the sixth seed Mikhail Youzhny.