By Simon Jennings

NEW YORK (Reuters) -Naomi Osaka turned the clock back to her championship days on Tuesday, dismantling Belgium’s Greet Minnen 6-3 6-4 with ruthless efficiency to storm into the U.S. Open second round at Flushing Meadows.

The twice U.S. Open champion made it look almost easy, sending down seven thunderous aces and managing a perfect six-for-six conversion rate on her own break chances.

Minnen, ranked 106th, had her moments of defiance, briefly leading 4-3 in the second set before reality came crashing down.

Her 30 unforced errors and a woeful 49% first-serve percentage told the story of a player overwhelmed by Osaka’s baseline barrage.

The Japanese star was clinical where it mattered, landing 58% of her first serves and winning 68% of those points.

Now 27 and jugglin

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