No balls that weren't called: Umpires failed to spot 21 no-balls on Day 2 of Gabba Test
Image Credit: Shortpedia
Since the DRS system has been introduced and some legend umpires like Simon Taufel and Billy Bowden retired, the standard of umpiring on the International level has been a matter of concern for the administration as well as the players. Joel Wilson and Marais Erasmus who were umpiring in the first Test between Australia and Pakistan at the Gabba in Brisbane missed out on spotting as many as 21 no-balls in a mere two sessions