Mirra Andreeva believes a change in her mindset is behind her US Open run after weeks of mixed results on the Tour.

Since capturing her first Grand Slam title at the French Open, Andreeva failed to win back-to-back matches at three consecutive tournaments before reaching the fourth round in Cincinnati. Giving her a win-loss record of 4-4 during this period.

The 19-year-old has turned her fortunes around at Flushing Meadows, where she is through to the quarter-finals for the first time in her career. Her latest victory was a marathon three-set win over Anastasia Potapova, who suffered a leg injury during the final game. Andreeva has also beaten Janice Tjen, Eva Lys and Nikola Bartunkova in straight sets.

“When I was coming into this tournament, I didn’t really know what to expect, because my results here were not the best,” Andreeva told reporters on Monday.

“I didn’t expect much. I just seem to not be able to find my rhythm yet here.

“So far, thank God, it’s not going bad.”

As for the key to her resurgence, the Russian says she is putting less pressure on herself so she can enjoy playing more. This problem started for her shortly after her French Open win.

“I just kind of feel maybe I’m more at peace in a way that I’m not as demanding of myself anymore,” she explained.

“After winning the French Open, I felt that every match that I played I had to win because I won the biggest tournament of my life.

“Now I just approach it, okay, I won not a Grand Slam, I won just another tournament. I’m just trying to forget that it was a Grand Slam, trying not to think about it, not to overthink, as well.”

Andreeva’s change in mentality occurred after she spoke with her psychologist shortly before the US Open got underway.

“I was just sharing how I feel, that I feel very stressed, that I feel super demanding of myself, that I cannot seem to let myself go and enjoy as I did before,” she said.

“That’s what she (her psychologist) said. I felt like that was helping a lot when I was practicing, when I was playing matches. I just really tried to convince myself not to overthink or question what my team says.

“That’s what I try to do to this day, and I feel like, you know, it’s working so far.”

Andreea will play Coco Gauff in the US Open quarter-finals later this week.