Mirra Andreeva eased into the French Open third round. AFP
The 18-year-old, seeded sixth at Roland Garros, wrapped up a 6-3, 6-4 win on Court Simonne Mathieu in just 73 minutes.
Andreeva, who reached the semi-finals last year, will face either Taiwan's Joanna Garland or Kazakh 32nd seed Yulia Putintseva in the third round.
"I struggled a bit with my serve but I'm happy with how I kept my calm and found a way in the end," said Andreeva, who is hoping to become the youngest woman to win a Grand Slam title since her compatriot Maria Sharapova's famous 2004 Wimbledon triumph.
She was still having to do school work during her run in 2024, which included a shock quarter-final win over Aryna Sabalenka.
"I don't have my school anymore. I'm finished. I'm done. So thank God. I have one problem less," said Andreeva.
She has climbed to a career-high ranking of sixth this season and became the youngest ever winner of a WTA 1000 title in Dubai in February, before securing another at Indian Wells.
Andreeva has been widely tipped for another strong performance at Roland Garros, with both Sabalenka and reigning champion Iga Swiatek in the other half of the draw.
"I would choose to win a Slam, first, rather than being world number one," she said of her career priorities.
Andreeva was broken in the first game of the match by world number 35 Krueger, but reeled off five successive games to take the first set.
The pair traded four breaks at the start of the second set, but Andreeva broke to love in the ninth game and served it out with aplomb.
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