Joshna, the current world no 10, gave a very good fight to her world no 13 ranked opponent in the first two games before losing 9-11 11-13 7-11 in 55 minutes at the Otters Club in suburban Bandra.
Second seeded Joshna was the lone Indian player left in the fray on the final day of the tournament, but could not upstage the top-seeded Annie in the summit clash.
Iker won the one-sided final 11-3, 11-9, 11-3 in just 27 minutes.
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