The gamers, each from the identical crew, have been subsequently eradicated from the draw that started on Sunday.
The unknown pair can be changed by the primary crew on the alternate checklist.
“Because the match started on Might 24, 2,446 assessments have been carried out on gamers and their groups,” reads an announcement from the match organizers.
“That is the primary incidence by which the match organizers need to ship gamers away, in compliance with their well being protocol.
“As a reminder, the well being of all gamers within the match and that of their groups is constantly monitored by means of very common assessments they usually stay and prepare in socially spaced ‘bubbles’.”
This yr’s match was supposed to begin per week earlier, however has been postponed to permit a restricted variety of followers to look at. It comes simply seven months after the final version, postponed to September 2020 because of the pandemic.
On the pitch, high-profile gamers Serena Williams, Daniil Medvedev, Stefanos Tsitsipas and Alexander Zverev progressed to the following spherical on Wednesday.