Chardy, the world No. 78, upset Mannarino on a rainy day in the Netherlands that saw play suspended for over two hours. He will meet Mackenzie McDonald in the quarterfinals after the American beat Australian qualifier Alex Bolt 6-4, 7-5.
Gasquet, who is competing in the tournament for the first time since 2008, dismantled Donskoy in a little over an hour to set up a quarterfinal encounter with Greece’s Stefanos Tsitsipas.
“It’s always tough to win,” said Gasquet, currently world No. 30. “The transition from clay to grass is definitely the toughest, and it gets tougher with age.”
Tsitsipas, a runner-up at the Barcelona Open in April, earned a hard-fought 4-6, 7-6 (6), 6-2 win over Tunisia’s Malek Jaziri.
On the women’s side of the tournament, play was significantly affected by the rain, although not before Alison Riske squeezed into the quarterfinals.
The American overcame Fanny Stollar of Hungary 7-6 (1), 6-2.