Almost every Indian umpire has made a howler this season, some a lot more than others © ESPNcricinfo Ltd

Steven Smith talks to the umpires © Getty Images

Umpire Richard Kettleborough draws out his light metre © AFP

Match umpires have a chat with the groundstaff as rain stops play © International Cricket Council

Sundaram Ravi © International Cricket Council

Brendon McCullum and Tim Southee talk to umpire S Ravi © Getty Images

Brendon McCullum queries the decision not to give Nathan Lyon out © Getty Images

Umpire S Ravi checks the shape of the pink ball © Getty Images

Umpire S Ravi talks to James Anderson about running on the pitch © Getty Images

S Ravi officiates © IDI/Getty Images

Umpires Billy Bowden and S Ravi inspect the conditions © BCCI

S Ravi, Portrait © ESPNcricinfo Ltd