India’s national champion Joshna Chinappa defeated compatriot and doubles partner Dipika Pallikal Karthik in the first round of the US Open Squash Championship.

The 13th seeded Chinappa won 7-11, 11-8, 11-8, 11-9 in 45 minutes on Sunday for her second consecutive entry into the second round of the championship.

A month ago the two Indians met at the China Open, with Chinappa winning there too but over five games.

She now plays fifth seeded Nouran Gohar of Egypt in the next round.