Bouchard got off to a quick start in the opening last eight clash and raced away to win it 6-1 in 38 minutes.
The second set saw Fruhvirtova dominate her opponent, a former Grand Slam singles semi-finalist. After a marathon opening set lasting 77 minutes, the teenager clinched it 6-2 in quick time.
Images from Day 12 of the French Open, at Roland Garros, in Paris.
Linette will battle against Canada's Rebecca Marino, the seventh-seed, in the last eight on Friday.
Top seed Elise Mertens cruised to victory, but fourth-seeded Nadia Podoroska and fifth-seeded Jacqueline Cristian were not as fortunate in the first round of the Jasmin Open Tunisia
Colombia's Camila Osorio pulled out a 7-6 (5), 6-7 (2), 7-5 win over Russia's Veronika Kudermetova, and Italy's Martina Trevisan beat Mexico's Renata Zarazua 6-4, 6-3.
Defeat for Williams was a major blow to her preparations for the French Open
The first set was over in 31 minutes with the No. 4 seed making the most of a weak Raina serve while saving two break points on her own serve.
Muchova says Grand Slam hunger behind another Sakkari upset in Paris
Factbox on Iga Swiatek, who defeated Sofia Kenin to win her maiden Grand Slam title at the French Open on Saturday.
Images from Day 10 of the 2020 French Open, at Roland Garros, in Paris.
Dominic Thiem defeated qualifier Facundo Bagnis of Argentina 6-4, 7-5 in the first round of the Plava Laguna Croatia Open Umag
'I think it's (pressure) maybe because I haven't played in an Olympics before and for the first one to be here was a bit much.'
IMAGES from Day 6 of the French Open, at Roland Garros, on Friday.
Earlier, Ukraine took a 2-0 lead over Japan as world number five Elina Svitolina took the first point of the Billie Jean King Cup era.
Images from Day 1 of the 2023 Australian Open at Melbourne Park on Monday.
IMAGES from Day 8 of the French Open, at Roland Garros, on Sunday.
Images from Day 11 of the 2020 French Open at Roland Garros, in Paris, on Wednesday.
Images from Day 4 of the Australian Open in Melbourne on Thursday.
Images from Day 4 of the French Open, at Roland Garros, in Paris.
