(CNN) -- Second seed Andy Murray battled his way into the quarterfinals of the ABN AMRO tournament in Rotterdam, but the world number four was far from his best as he struggled to beat Italian Andreas Seppi on Thursday.
An out-of-sorts Murray was macde to battle before reaching the last eight in Rotterdam.
Seppi beat Rafael Nadal in the second round of last year's tournament and he caused an out-of-sorts Murray plenty of problems before the Briton finally sealed a 7-6 7-5 victory.
Murray took a topsy-turvy first set on a tie-break and then battled back from a break down to seal a meeting with Frenchman Marc Gicquel in the last eight of the tournament.
Gicquel secured his place in the last eight after defeating compatriot Paul-Henri Mathieu 6-4 6-3.
Another Frenchman, fifth seed Gael Monfils, put out compatriot and defending champion Michael Llodra 6-4 6-4, and will tackle compatriot Julien Benneteau -- who booked his last-eight place on Wednesday with an upset win over Russian third seed Nikolay Davydenko.
Meanwhile, Croatia's Mario Ancic continued his recent run of good form with a 6-4 3-6 6-3 win over French fourth seed Gilles Simon. Ancic next faces Russian Mikhail Youzhny.