Pakistan right-hand batsman Azhar Ali nearly had a mini heart-attack on day two of the second Test match against Australia as he was about to complete his ton in Melbourne.
Azhar, who was batting on 93 in the 69th over of the Test, had to dive back in at the non-striker's end when Asad Shafiq drove a Jackson Bird delivery straight to the stumps.
The third umpire, when asked to take a look at the event, was found unsure of which button to press to announce his not-out decision.
And when the screen flashed the decision made by Richard Illingworth, it was confirmed that he had pressed the wrong button.
Azhar, the crowd and all the Australian players went into a shock for a moment but then everyone laughed at the confusion.
The screen soon flashed not-out and Azhar was allowed to complete his ton.
Pakistan are 310-6 at the end of day two with only 101 overs bowled to them in a rain-curtailed match. Azhar (130*) will continue on day three with his partner Mohammad Amir who scored a 28 off 23 balls courtesy six boundaries.
Here is what happened