The majority of play was suspended on day two of the Australian Open because of extreme heat in Melbourne.
With temperatures above 35C, matches on the outside courts were stopped just before 2.15pm local time (03:15 GMT).
Britain's Dan Evans was involved in one of them, leading two sets to one against Argentina's Facunado Bagnis.
Andy Murray's match against Matteo Berrettini was allowed to start at about the same time because it was under the roof on Rod Laver Arena.
Matches on Margaret Court Arena and John Cain Arena - which both also have a roof - were allowed to continue.