Argentine Juan Martin del Potro has withdrawn from next week's Brisbane International due to a persistent left wrist injury, tournament officials announced on Thursday.
The injury-ravaged 2009 US Open winner, who has no
Del Potro is the second US Open champion to pull out of the Brisbane event in the past 48 hours following the withdrawal of Marin Cilic with a shoulder injury.
Croatia's Cilic won his first Grand Slam when he claimed the US Open title last year.
Del Potro's withdrawal comes less than three weeks before the first grand slam of the year starts in Melbourne on January 19.
Despite losing two high-profile players, a strong field is expected for the event, including Roger Federer, Kei Nishikori, Milos Raonic and Grigor Dimitrov, who have all confirmed their participation.
Image: Juan Martin Del Potro celebrates winning a quarter final match against Nicolas Mahut of France at Sydney International
Photograph: Joosep Martinson/Getty Images
Injured Cilic pulls out of Brisbane event
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