The suspicions relate to a match in the first round that was played last week in the ladies' doubles tournament.
In the meeting won (7-6, 6-4) the Romanian couple Andreea Mitu and Patricia Mari who met the Russian / American duo Yana Sizikova and Madison Brengle.
This is far from the first time that match-fixing has been investigated in tennis.
Earlier this year, for example, Brazilian player João Souza was suspended for life for match-fixing both in ATP matches and on the ITF Futures tour.