After rain washed out scheduled play Sunday and Monday, all 12 first-round matches were played Tuesday at the Nice Lawn Tennis Club.
Tomic, seeded fifth, handled Slovak Lukas Lacko 6-2, 6-3, while Ferrero gutted out a 4-6, 7-6 (8-6), 7-6 (8-6) victory over sixth-seeded Dutchman Robin Haase.
Other Day 1 winners included Russian Nikolay Davydenko, American Brian Baker, Kazakhstan's Mikhail Kukushkin, Brazilian qualifier Thomaz Bellucci, Frenchman Edouard Roger-Vasselin, Italian Filippo Volandri, Belgian Xavier Malisse and Bulgarian qualifier Grigor Dimitrov.
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