Top-seeded Rafael Nadal advances to semifinals of Hamburg Open by beating Pablo Cuevas 6-3 6-2.
World No 2 gives no reason for decision to pull out of Montreal event next month in statement from organisers.
Top seed overcomes sluggish start to beat his compatriot Fernando Verdasco in first round of German ATP event.
Australian completes a tumultuous fortnight to successfully defend title at Claro Open in Bogota.
Troubled Aussie's Claro Open title defence on track after easy 6-1 6-4 win over Japan's Tatsuma Ito in Colombia.