Hawk-eye has been branded "a total disaster" and "useless" after failing to work during the All-Ireland quarter-final clash between Monaghan and Armagh.
Having battled hard over the past few weeks and months to make it to the last eight of the Championship, the teams involved would surely expect the technology to work.
However, when called upon in the second half of extra-time to check a potential Monaghan point, hawk-eye displayed the message "data available".