Jarkko Nieminen is to meet Igor Sijsling in the Power Horse Cup 2013 semi-finals, whilst Haas has retired from the Dusseldorf tournament.
In the clash of unseeded players Sijsling, ranked 68th, brushed aside World no. 95 Jan Hajek of Czech Republic in their first ever ATP confrontation. The Dutch athlete broke the deadlock in the opener and confirmed his fourth game break to construct a 4-1 lead. He had to stay on his toes until the end of the opening set as he dismissed six re-break points before tucking away the set ball number one. The following set was an easy ride for the better ranked player as he opened it by winning four straight games, confirming his second break with a hold to love. The Czech managed to avoid a bagel, but was far from preventing his rival tucking away the first of his match balls after merely 58 minutes of tennis. The 25-year-old Dutch, who is yet to win his first ATP title, progressed with a smooth 6-3, 6-1 victory.
Sijsling is scheduled to play sixth-seeded Finn Nieminen in the semi-finals – the latter was given a walkover as his quarterfinal opponent Tommy Haas, seed number two, withdrew from the tournament due to illness.