The Wimbledon upsets continued as women's world number one Maria Sharapova crashed out to impressive German Sabine Lisicki in the fourth round of Wimbledon.
The Russian had no answer to Lisicki's power game, going down in straight sets 6-4, 6-3.
Sharapova admitted after the match, she lost to the better player on the day.
"I had chances, I didn't take them," the French Open champion said.
"But I think all the credit goes to my opponent today, she played really well, did many things better than I did on this given day and, you know, you just have to hand it to her.
"I could have done things differently, absolutely, but unfortunately not on this particular day."
Sharapova felt, if Lisicki continued this vein of form, she could consistently contend for titles.
"She's always had that potential. Obviously she did really well last year, went to the semi-finals. I haven't really followed he results too much in the last year, but if she plays at this level, of course she belongs at the top.
"If she serves as well as she did today, and is as aggressive as she was, I mean there's no doubt that she has a lot of potential, but it's not about just one tournament, you have to keep doing it in as many tournaments as you play."
Sharapova, who became the world number one after her victory at Roland Garros, will lose her top ranking to either Victoria Azarenka or Agniezska Radwanska, after the 25-year-old's early exit. Asked about her feelings on losing the no ranking, she said: "I don't know. It's all seems a little bit irrelevant what I achieved a few weeks ago, but it doesn't just go away. I will have that for the rest of my career.
"But the tennis world always keeps going and you need to raise your level at a point even when your opponent plays really great tennis and today just wasn't my day.
"As far as that motivation, of course, you always want to stay at the top for as long as you can.
"Everyone guns for that spot as it is the top spot."
Sharapova said she was now looking forward to some rest. "I'm really proud of what I have achieved. Obviously as tough as it is, sitting here being an athlete after a loss, you always try to take away as many positives as you can.
"You need to use it as motivation. It will be nice to rest a little bit, and be in a home atmosphere, I've missed it for the past two months.
"Once I relax I's sure to use this as great motivation and keep going after the many goals that I have.
Lisicki will now meet compatriot Angelique Kerber in the quarterfinals after the German beat Kim Clijsters 6-1, 6-1 on the Belgian's last Wimbledon. Clijsters will retire from the game after this year's US Open.
Lisicki, who considers Wimbledon as her favorite tournament, said she felt very confident going into the game against Sharapova.
"I felt great. I had a great practise yesterday evening and I felt good this morning and as soon as I stepped on the court I also felt like I'm playing very well so, I was feeling very confident.
"Even though I lost the first game, I just missed a couple of points here and there, but overall I felt very good and confident.
"It feels amazing. I mean, she won the French Open, but actually that is a good omen for me, because I've beaten the French Open champion three times here, in '09, I beat Svetlana (Kuznetsova), last year Li Na and this year her, so I guess they shouldn't be my part of the draw," she added with a laugh.
The 22-year-old admitted grass suited her the most and she was very comfortable on this surface.
"I think on grass you need to have a good serve, it gives you a great advantage. And that's what I have. I like to be aggressive in general, playing aggressive tennis so I think that's why grass suits me well.
"The atmosphere at Wimbledon is just amazing; all the traditions make me feel very comfortable here."
