Japan's Naomi Osaka, world number two, was eliminated this Sunday in the second round of the Madrid Tournament against Czech Karolina Muchova 6-4, 3-6, 6-1.
Muchova, semifinalist at the last Australian Open, took the first set after a break in the Japanese service.
Osaka was 3-1 down in the second set, but reacted to win five straight games and force the third set, in which the more aggressive Muchova prevailed 6-1.
Muchova will face in the next round the Greek Maria Sakkari, 16th seed and executioner this Sunday of the Estonian Anett Kontaveit 6-3, 6-1.
On the other hand, Simona Halep, another of the great favorites, continues with a firm step after beating the Chinese Saisai Zheng 6-0, 6-4.