Del Potro loses on return
Former US Open champion Juan Martin del Potro lost his comeback match against Olivier Rochus in the first round of ATP Bangkok.
The Argentine - who has not played an ATP Tour match since the Australian Open in January - put up a solid fight in the opening set, saving two break points before losing in a tie break.
He broke the Belgian's serve in the second set, but lost his own serve twice to go down 7-6(7) 6-4 after a rusty performance peppered with unforced errors.
Del Potro, who won the 2009 US Open, has suffered with a persistent wrist injury that has wrecked his season and forced him to go under the knife in May.
The Argentine has come to Asia in a bid to regain his form ahead of the Shanghai Masters starting on October 10.
Seeded players with byes into the second round of the $551,000 event in Bangkok are world number one Rafa Nadal and fellow Spaniard Fernando Verdasco, Austrian Juergen Melzer and Latvian Ernests Gulbis.