Paire fought back from a 1-4 deficit in the opening set to dispatch the opponent in 79 minutes. The 30-year-old will face with Slovenian Aljaz Bedene in the semi-final on Saturday.
Bedene reached his first ATP Tour hard-court semifinal since 2016 Chennai by defeating Spaniard Pablo Carreno Busta 6-4, 7-5.
Tsonga is also in great form after eliminating the second top seed Nikoloz Basilashvili. The 27-year-old Georgian retired in the third set after suffering a shoulder injury. Tsonga will face Pouille in semi-final for their fifth confrontation (2-2).