Andy Murray was handed a walkover at the Shanghai Masters when Russian opponent Dmitry Tursunov withdrew with a wrist injury.
Murray is seeded second for the tournament and will now face Stanislas Wawrinka in the third round.
Tursunov beat Thomas Bellucci 6-7 6-4 7-5 in the first round but was not fit to face Murray, who is yet to play in the tournament after a first-round bye.
Rafael Nadal beat Guillermo Garcia-Lopez 6-3 6-2 to reach the third round.
Jo-Wilfried Tsonga was beaten by Japan's Kei Nishikori 7-6 4-6 4-6 but third seed David Ferrer eased through with a 7-5 7-6 win over Milos Raonic.
Murray's side of the draw has opened up with the losses of Tsonga and fifth-seeded Mardy Fish, who fell to Australian Bernard Tomic on Tuesday.
The highest-ranked seed remaining in his half of the draw is Gilles Simon of France who is seeded eighth.
Murray's match against Wawrinka will take place not before 0830 BST on Thursday.
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