Zheng Qinwen zapped 23 aces and won 44 of 50 first-serve points defeating Naomi Osaka 6-4, 3-6, 6-3 in an explosive Berlin opener.

The 21-year-old will face Jack Draper or Mariano Navone next at Queen's Club.

Jannik Sinner slammed 15 aces and did not surrender serve rallying past Tallon Griekspoor 6-7(8), 6-3, 6-2 in his Halle opener.

Sabalenka is out, but slots have opened for Naomi Osaka and Caroline Wozniacki to compete.

The Canadian saved a match point to win in three sets.

For the second weekend this year, Boulter shared the winner's circle Alex de Minaur.

Andreescu came within a whisker of her first title since 2019 but was denied down the stretch.