The home-court edge continued to be a huge factor in the Open Sud de France at Montpellier with three players from France leading the charge into the semifinals on Friday.
Two-time defending champion Richard Gasquet fought off a stiff challenge from Kenny De Schepper, outlasting his countryman 6-2, 5-7, 6-4.
The third-seeded Gasquet needed two hours, 16 minutes to finish off De Schepper and move closer to his bid for a third straight tournament title.
Next up for Gasquet is unseeded Benoit Paire, who won his opening game before Germany's Dustin Brown was forced to retire from the match because of a lower-back injury.
Paire had advanced to the quarterfinals by upsetting fifth-seeded Feliciano Lopez while Brown KO'd No. 1 seed Marian Cilic.
In the other half of the draws, second-seeded Jo-Wilfried Tsonga earned his spot in the final four with a 6-2, 7-5 victory over Russia's Daniil Medvedev.
Tsonga, ranked 14th in the world, has dropped only 10 games in his first two matches and will face fourth-seeded Alexander Zverev of Germany in the semifinals.
Zverev reached his first semifinal of the year with a 6-4, 4-6, 6-2 over Jeremy Chardy of France. Zverev lost his lone matchup against Tsonga, at Shanghai in October.