Casablanca, Morocco - Tobias Kamke of Germany beat fifth-seeded Jurgen Melzer 6-3, 6-3 in the first round at the Grand Prix Hassan II on Tuesday.
Guillermo Garcia-Lopez downed sixth-seeded Daniel Gimeno-Traver 7-6 (7/5), 3-6, 6-3 in an all-Spanish match.
Kamke will play former top-five player Tommy Robredo of Spain, while Garcia-Lopez faces France's Edouard Roger-Vasselin, who rallied to beat Albert Montanes of Spain 3-6, 6-4, 6-4.
Spanish qualifier Pablo Carreno-Busta beat two-time defending champion Pablo Andujar 6-4, 2-6, 6-3.
Carreno-Busta, who is ranked 237 places below his compatriot, will play second-seeded Kevin Anderson of South Africa.
Eighth-seeded Grega Zemlja edged out Matthias Bachinger of Germany 6-7 (3/7), 7-5, 7-6 (7/2) in a match featuring 16 aces. The Slovenian next faces Henri Laaksonen after the Swiss qualifier beat Younes Rachidi of Morocco 6-3, 6-7 (8/10), 6-1.
Italian qualifier Filipo Volandri topped Paul-Henri Mathieu of France 6-3, 7-5 and will play third-seed Martin Klizan of Slovakia.
Aljaz Bedene defeated French qualifier Marc Gicquel 6-1, 6-4. The Slovenian next faces fourth-seeded Benoit Paire.
Results from the second day of the ATP Grand Prix Hassan II on Tuesday (x denotes seed):
First round
Edouard Roger-Vasselin (FRA) bt Albert Montanes (ESP) 3-6, 6-4, 6-4
Guillermo Garcia-Lopez (ESP) bt Daniel Gimeno (ESP x6) 7-6 (7/5), 3-6, 6-3
Grega Zemlja (SLO x8) bt Matthias Bachinger (GER) 6-7 (3/7), 7-5, 7-6 (7/2)
Aljaz Bedene (SLO) bt Marc Gicquel (FRA) 6-1, 6-4
Tobias Kamke (GER) bt Jurgen Melzer (AUT x5) 6-3, 6-3
Henri Laaksonen (SUI) bt Younes Rachidi (MAR) 6-3, 6-7 (8/10), 6-1
Filippo Volandri (ITA) bt Paul-Henri Mathieu (FRA) 6-3, 7-5
Pablo Carreo (ESP) bt Pablo Andjar (ESP) 6-4, 2-6, 6-3