MIAMI, USA— One week after apologizing to fans for “the worst match” she’s ever played in her life, Naomi Osaka was back in the winners circle at the Miami Open.

This match on Tuesday wasn’t pretty either, as she trailed Ukrainian qualifier Yuliia Starodubtseva by a set and a break. But Osaka rallied for a much-needed win nonetheless after two and a half hours, 3-6, 6-4, 6-3.

“I was going to run into every corner if I had to, and we were going to have to play for three hours if she was going to beat me,” Osaka said in her on-court interview.

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After falling to Camila Osorio in straight sets in Indian Wells, Osaka headed to Miami early, telling Tennis Channel’s Prakash Amritraj that opted for a one-week training block to acclimate to conditions and work on building back her stamina.

That work showed as the former world No. 1 out-gunned Starodubtseva in the crucial moments, striking 27 winners and hitting 10 aces, and showed off her improved movement as she covered the court to redirect the Ukrainian’s groundstrokes.

The result was Osaka’s first match win since reaching the third round of the Australian Open—where she retired with an abdominal injury against the resurgent Belinda Bencic.