The 29-year-old Argentinian lost the first set of his match against Xavier Malisse 4-6 but bounced back to win the next two sets in the tie-break 7-6 (8/6 and 7/3) to book his place in the second round.
James Blake of the United States had it easier in defeating Belgium's Olivier Rochus 7-6 (8/6) 6-3, while Germany's Tobias Kamke saw off Spain's Tommy Robredo 6-2 6-3.
Russia's Dimitry Tursunov was another straight-sets winner, defeating Spain's Albert Ramos 7-6 (7/5) 6-4.
Finland's Jarkko Nieminen ousted Romania's Marius Copil 6-3 7-6 (7/4), Croatia's Ivan Dodig knocked out France's Adrian Mannarino 7-6 (7/5) 7-6 (8/6) and South Africa's Kevin Anderson beat Spain's Guillermo Garcia-Lopez 7-6 (7/1) 7-6 (7/4).
Canada's Milan Raonic won the last match to finish, seeing off Marcos Baghdatis in a match which lasted two hours and 22 minutes.
Raonic won the first set 7-6 (7/5) but the Cypriot levelled the match by winning the second set 7-6 (7/4).
However, Raonic finished strongest to see out the contest 6-4 and book his place in the second round.