Top seed Iga Swiatek says the pressure of not wanting to lose at the Australian Open got to her and believes she needs a change of mindset after her fourth-round loss to Elena Rybakina.

The three-time grand slam champion had come into the Australian Open as the title favourite but was bundled out by 2022 Wimbledon champion Rybakina 6-4 6-4 in one hour and 30 minutes on Sunday.

The Kazakh's power was too much for Swiatek, with Rybakina outstanding on serve, leading to apparent frustration from the world number one as the match slipped away.

"I felt the pressure, and I felt that I don't want to lose instead of I want to win," Swiatek told reporters. "So that's a base of what I should focus on in next couple of weeks.

"It was just tough. But for sure I need to work on my kind of mindset and fight a little bit more as I did last season.

"So, for sure I'm going to take time right now to kind of reset."

Swiatek won both the US Open and French Open titles in 2022, while she went on a 37-match winning streak that ended during Wimbledon.

The 21-year-old Pole denied that the pressure of being the world number one played a part in her exit.

"I don't think that matters," she said. "I experience it differently because I felt differently.

"But I was number one on Roland Garros, I was number one on Wimbledon, and US Open. I was able to - maybe not on Wimbledon - but I was able to play well and compete. I don't think that matters."

Swiatek was able to bounce back from her third-round Wimbledon loss to Alize Cornet quickly by triumphing at Flushing Meadows only two months later but she would not draw an parallels with Sunday's defeat.

"I don't see that many similarities, honestly," Swiatek said. "I feel like it's pretty easy. I just wasted too much energy before the tournament and during the first days of the tournament to worry.

"It's just different period of time for me. Before the US Open I was actually able to kind of let it go because I played pretty bad in Toronto and Cincinnati, and that helped me kind of to reset and just start the US Open without actually expecting much from myself.

"Here was different, so I'm not connecting the US Open with the streak at all. I'm not comparing this situation to my Wimbledon loss."

Swiatek praised Rybakina, who will face Jelena Ostapenko in the quarter-finals, for her play on Sunday, stating she was tactically composed and focused.