 Rosen did not qualify for the 2014 Winter Olympics; consequently luge did not then receive UK Sport funding for the 2018 Olympic cycle.Rosen qualified for the 2018 Winter Olympics, along with Rupert Staudinger, but with inferior quality equipment he only managed to finish 22nd.Rosen's best finish at the FIL World Luge Championships was 24th in the men's singles event at Igls in 2007.