Robertson reached the quarter-final of the Masters, but lost 4–6 against Mark Allen. Robertson lost in the first round of the German Masters 4–5. At the next two ranking tournaments Robertson lost in the second round, 1–4 against Graeme Dott at the Welsh Open and 1–5 against Peter Ebdon at the China Open. Robertson could not defend his World Snooker Championship trophy, as he lost 8–10 in the first round against eventual finalist Judd Trump.