Two qualifying matches at Roehampton and one from the main Wimbledon draw triggered some bizarre betting patterns and are to be examined further, said the anti-corruption body that polices professional tennis.
"These will be assessed and reviewed in keeping with the TIU match alert policy below," the TIU said on its website.
The TIU's match alert policy means that the unit checks on irregularities such as strange betting tendencies, but it insisted the alerts are not evidence of match-fixing.
There has been a decline in the number of alerts received by the TIU this year with 83 triggered in 2017 thus far -- 38 fewer than at the same stage last year.
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