The Japanese former world number one grew up playing on hard courts in the United States and has mostly struggled on the red dirt over the years.
But back at the Caja Magica for the first time in two years, Osaka looked comfortable during her 6-4, 6-1 win over Belgian lucky loser Greet Minnen to book a second-round meeting with 15th seed Liudmila Samsonova.
It was just the fourth victory on clay for Osaka since the start of 2021 and the four-time Grand slam champion is hopeful it won’t be her last in Madrid this fortnight.
On Arantxa Sanchez stadium, Osaka was breezing through her service games in the opening set but couldn’t convert any of her first three break point opportunities before she finally got the break she needed in the 10th game to take a one-set lead.
The second set was a stroll compared to the first as Osaka built a 5-0 advantage and secured the win with a backhand winner on the 79-minute mark.