Fifth seed Benoit Paire secured a second-round spot in the ASB Classic by beating Michael Venus in Auckland.
Paire did not have everything his own way against the Kiwi but he emerged with a 6-4 7-6 (7/4) victory.
Italy's Fabio Fognini, seeded sixth, won 6-4 2-6 7-6 (7/3) against Joao Sousa while Roberto Bautista Agut sealed a 6-3 7-5 victory against Jiri Vesely.
Philipp Kohlschreiber made light work of his clash against Benjamin Becker by beating his fellow German 7-6 (8/6) 6-3 but 10th seed Guillermo Garcia-Lopez crashed out 7-6 (7/5) 6-4 to Lukas Rosol.
Source: PA