Following an earlier suspension of play due to extreme heat, the tennis was further interrupted later in the day by heavy rainfall.
Reuters photographer Brandon Malone captured a lightning bolt appearing in the Melbourne skyline while Michal Przysiezny played Stephane Robert played on an outdoor court.
Play has currently resumed on the covered showcourts for the evening session. Andy Murray's second round match has been delayed.
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The rain will ease in the west tonight, but the cloud cover will remain across much of England, Wales and N. Ireland.