Top-seed Prajnesh Gunneswaran of India and his 16th-seeded compatriot Sasikumar Mukund moved into the semifinals of the ATP Chennai Open Challenger tournament. They were joined in the last four by second-seeded Corentin Moutet and unseeded Australian Andrew Harris.

Chennai southpaw Gunneswaran eased past Australia’s James Duckworth, the seventh-seed, 6-4, 6-3. Mukund was an impressive winner as he overcame a mid-match slump to beat Brydan Klein 6-2, 3-6, 7-6.

Mukund will meet Moutet in the semifinals. Harris came back from behind to upset the fifth seed Alejandro Davidovich Fokina of Spain in three sets to set up a last-four clash with Gunneswaran.