Second seed Aryna Sabalenka breezed past Japanese qualifier Moyuka Uchijima 6-2 6-2 under the roof on Court Philippe-Chatrier to move into the French Open third round.
Uchijima, playing in the second round of a Grand Slam tournament for the first time, could not cope with Sabalenka's powerful serve and groundstrokes.
The Belarusian wrapped up victory in 62 minutes and will next face her good friend Paula Badosa in the third round.
While most matches on the outer courts were suspended due to rain once again, Sabalenka said she was fortunate to be among the top seeds which guarantees matches under the roof if required.
Sabalenka won six points in a row at the start of the match but once Uchijima had overcome her nerves she gained confidence and settled down against the Belarusian.
Uchijima held her serve but when she trailed 3-2, Sabalenka had warmed up and she pounced on a break point with a fierce winner before taking the first set in 29 minutes.
The two were meeting for the first time but Sabalenka said she had done her homework after her team provided her with videos of the Japanese number one.
"I watched her previous matches, we had all the videos. I'd say I knew a lot about her going into this match," Sabalenka said of Uchijima, who is ranked 83 in the world.
Uchijima afforded herself a smile when she got the better of the Belarusian on a long rally to make it 4-2 but Sabalenka refocused to save a break point before breaking the Japanese player's serve to seal victory.
"It was definitely fun playing all those drop shots. Super happy with the result and I really enjoyed playing today," Sabalenka added.
Former Wimbledon champion Elena Rybakina, seeded fourth, defeated Dutch world number 50 Arantxa Rus 6-3 6-4.
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