Denis Istomin of Uzbekistan upset the no.4 seed Fernando Verdasco in straight sets 6-3 6-3 to reach the Sydney International 2013 quarter-finals.
Istomin, who reached the semis here last year, was always in control of the match, booking himself a clash against South Africa’s Anderson in the last 8.
Kevin Anderson advanced into the next round after beating another Spaniard Feliciano Lopez also in straight sets 6-3 6-4 in one hour and 17 minutes.
Anderson managed to avert all three break points he faced in the match, taking his opponent’s serve twice on his way to victory.
In other second round matches, 8th seeded Marcel Granollers of Spain eliminated Italy’s Fabio Fognini 6-2 7-6 (4), Finn Jarkko Nieminen ousted Slovak lucky loser Ivo Klec 6-3 6-1 and no.3 seed Andreas Seppi of Italy made his way into the quarters after defeating Australian wild card holder John Millman 6-2 3-6 6-3.