British pair Johanna Konta and Heather Watson both made losing returns to the WTA Tour with straight-sets defeats at the Top Seed Open in Kentucky.
Konta, the third seed, was beaten 6-4 6-4 by world number 48 Marie Bouzkova of the Czech Republic.
The Briton also lost to Bouzkova in Mexico in March in her final match before the tour was suspended because of coronavirus
Watson struggled in her 6-2 6-1 loss at the hands of American Jennifer Brady.
More to follow.