Number one seed Bernard Tomic needed three sets to progress into the third round of the Ecuador Open in Quito.
Tomic, who was beaten by Andy Murray in last month's Australian Open, received a bye in the first round and beat Spaniard Roberto Carballes Baena 6-3 2-6 6-4 on the clay in Ecuador.
He now meets Paolo Lorenzi in the quarter-finals after the Italian saw off Alejandro Falla 6-3 6-2 while third seed Thomaz Bellucci also made serene progress, beating Albert Montanes 6-2 6-4.
Pablo Carreno Busta won the battle of the Spaniards as he was a 6-7 7-6 6-2 victor over Inigo Cervantes and will face Bellucci in the last eight.
Number two seed Feliciano Lopez begins his tournament on Thursday with a second-round clash against Joao Souza while Fernando Verdasco faces Renzo Olivo.
Source: PA
