Bianca Andreescu is taking no risks with injury before the French Open with the top seed pulling out of the lead-in event in Strasbourg despite advancing to the quarter-finals.
The Canadian eased her way to the last eight with a 6-1 6-4 win over qualifier Maryna Zanevska before promptly announcing her withdrawal from the WTA event due to injury.
"I'm super happy with the win today. I will be pulling out of my next match, because I did feel a little bit of an ab tear and I don't want to push it at all for Roland Garros," world No.7 Andreescu said.
The 2019 US Open champion has now won two matches at a WTA-level clay-court tournament for the very first time in her career - indeed, her 65-minute win over Zanevska was just her third singles match on the surface at tour level.
The last-16 clash between Alize Cornet and Poland's eighth seed Magda Linette resulted in a retirement.
Frenchwoman Cornet pulled the pin due to a right hip injury when trailing 7-6 (7-2) 3-0.
In first-round action, second-seeded Jennifer Pegula crashed out of the tournament in a 6-4 6-4 defeat to Arantxa Rus.
Shelby Rogers saved a match point before overcoming American compatriot Christina McHale 7-5 6-7 (6-8) 7-5 in a match lasting almost three and a half hours - one of the longest of the season thus far.