Andy Murray reaches quarter-finals of Australian Open after win over Gilles Simon and now plays Jeremy Chardy As in his previous match against Ricardas Berankis, Murray was struggling to time the ball as sweetly as he would have liked. He made 14 unforced errors in the first set - a surprising total for a man who never came under any sustained pressure. But then perhaps that was the problem. Without any genuine competition to feed off, Murray seemed listless and sluggish. And the lack of atmosphere on Hisense Arena - which happens to be one of the less intimate show courts on the tennis calendar - didn't help matters either. Asked how he thought Murray was playing, Simon replied: "It's not easy for him because there is no intensity. So sometimes I'm playing two good shots, and then I give two games in a row. He was missing his forehand at the end, going for winners every time. But from what I saw early on, I think he's in good shape. Murray himself gave an honest assessment of his day's work. "After the first few games it didn't feel that competitive," he said. At this stage of a grand slam you're sort of geed up and prepared for a tough battle. That's why it becomes hard because the emotions aren't quite into it. You're not quite necessarily feeling pressure, but you're wanting to try to finish the match as quickly as possible. He wasn't serving hard at all, and on his forehand side he wasn't moving that well either. Murray hasn't dropped a set in his four matches to date, yet neither has he switched on his best form. Asked if he was at all worried that he hadn't been tested yet, he was philosophical. Who knows? I mean, Gilles got tested very hard in his last round and couldn't compete today. You can look at it both ways. You just have to work hard on the days off, practice all the things that you need to do better, and hope that when the time comes when you are tested, you play better. I think that this last week, almost every single time when I've been broken, I've broken straight back, which is a good sign. I hope I can keep that up. Murray's next opponent will be another Frenchman. Jeremy Chardy, the world No 36, shocked Juan Martin del Potro in the third round and then backed that fine win up today by eliminating 21st seed Andreas Seppi in four sets. "I have played him quite a few times," said Murray, who has a 4-1 winning record against Chardy but lost their last meeting in Cincinnati last August. We grew up around the same time in juniors and know each other pretty well. He can be erratic. But when his game is on, like it's been the last few rounds, he's a very tough player to play because he doesn't give you too much rhythm. And, yeah, he really goes for it.