Under the cosh

Pollard to Rohit Sharma, out Caught by Ramdin!! More trouble for India as Rohit Sharma could well be under the cosh for asking the ump to refer to the the third ump! Rohit Sharma went down to play his attempted paddle scoop, it may well have gone of the glove to Ramdin, not sure whether Bowden gave it out initially, but Rohit Sharma wanted it to be referred, he does not know that there is no UDRS here, Pollard and WI were convinced, after consulting with Taufel, Bowden gave it out! Replays indicate that it went of the forearm, Bowden has made another error! Rohit Sharma c Ramdin b Pollard 5(8) [4s-1]

Please explain to me what "under the cosh" means here.