ATP s-Hertogenbosch: Ricoh Open day five recap
Gilles Muller during his win over top seed David Ferrer (Photo: Ricoh Open)

Quarterfinals day at the Ricoh Open saw number one seed David Ferrer crash out to Gilles Muller 4-6, 6-4, 7-6(5), while Ivo Karlovic, Sam Querrey and defending champion Nicolas Mahut all progressed to the last four in Netherlands. 

Karlovic advances to last four

Ivo Karlovic serves worked well throughout the match as he won 92 percent of first serve points and fired 22 aces en route to a straight sets victory against Adrian Mannarino. The set was anything but steady. The Croatian broke in the second game before having to battle to save three break points before going on to hold. With one break still separating the two players, Karlovic had three set points saved on the Frenchman's serve in the ninth game. However, the following game he would use his effective serve to close the set out to love. The second set would be tighter and in the sixth game, the 6'11 Croatian managed to break Mannarino at the first time of asking. From then on he closed out the match. 

Top seed ousted by Muller

Gilles Muller will face big-serving Ivo Karlovic in the semifinals after upsetting  David Ferrer 4-6, 6-4, 7-6(5). The powerful left-hander managed to save four of five break points in the match and on his third match point, he sealed the victory. After dropping the first set, Muller secured the lone break of the match, winning the final point of the set following a missed opportunity in the last point. The 33-year-old saved three break points in the final set before going on to clinch his first win over the Spaniard in the tiebreak. 

Querrey stops Kozlov momentum

Fifth-seeded Sam Querrey stopped 18-year-old's Stefan Kozlov run in s-Hertogenbosch with a comfortable 6-3, 6-0 win. Querrey did not drop serve in the entire match and broke his compatriot four times in a match lasting only 55 minutes. This was Kozlov's first ATP quarterfinal appearance. Sam Querrey managed to win 89 percent of first serve points and is on course for his second title of the year after winning Delray Beach in February. 

Sam Querrey in action against Stefan Kozlov (Photo: Ricoh Open)
Sam Querrey in action against Stefan Kozlov (Photo: Ricoh Open)

Defending champion advances to semifinals; ousts second seed Tomic

Nicolas Mahut battled to defeat Aussie Bernard Tomic 6-7(5), 6-4, 6-2 to set up a clash against Sam Querrey in the semifinals. The Australian hit 14 aces, while Mahut replied with 12 of his own as he scored his first ever win over the 23-year-old. Both players traded breaks in the opening set and sent it to a tiebreaker in which Tomic won. Mahut levelled the set with the lone break coming in the sixth game. Mahut broke the Aussie twice in the deciding set and was relatively untroubled on serve during the set and clinched victory on his first match points. Mahut faces American Sam Querrey for a place in Sunday's final.