Melbourne: Former US Open champion Juan Martin del Potro pursued his comeback from serious injury as he beat Taiwan's Lu Yen-hsun to reach the Australian Open's fourth round on Friday.
The Argentinian world number 11 beat Lu 6-2, 6-3, 6-0 to equal his best grand slam performance since lifting the US title in 2009.
The result ended the campaign of 79th-ranked Lu, who shocked David Nalbandian in Melbourne in 2009, a year after claiming Andy Murray's scalp at the 2008 Beijing Olympics.
Del Potro missed much of 2010 as he underwent wrist surgery but he stormed up the rankings as he returned to full action last season.
The big right-hander has set his sights on breaking back into the game's elite and now needs to beat Germany's Philipp Kohlschreiber to equal his best result in Melbourne, the quarter-finals in 2009.