Tournament referee Rob Wilkinson said officials became suspicious because the match involving Ukranian-born Anastasiya Korzh featured a “heightened number of questioned calls.”
Officials found the earpiece hidden under the girl’s headband, linked by a cord to a receiver under her shirt, The Press newspaper reported.
Korzh’s father said the earpiece was only being used to help the girl keep score in the under-10 tournament.
She was playing in her first tournament.
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