England can't afford another mediocre display in Mohali.
India, 2-1 up, will clinch the series with victory in Wednesday's fourth one-dayer and even if they don't, the best England may be able to hope for is a 2-2 draw as there's still some doubt over whether the final match in the series, in Dharamsala, will go ahead because of heavy snowfall in the region.
My gut feeling is that it will take place somewhere because India don't like giving up one-dayers, but this is the big game, this is the match we've come for, this is the challenge England must rise to.
I've never played on a tired Mohali pitch and England should expect another good one, with a little in it for the seamers, which means the batsmen cannot afford a repeat display of the kind we saw in Kochi and Ranchi.
Alastair Cook, Ian Bell, Kevin Pietersen and Eoin Morgan had fantastic records in 2012 but they've been poor in the last two games - especially Saturday's seven-wicket defeat. I was really cross after that game because it was a good pitch but they fell well short of a decent total.
There was a little bit of movement early on which made life difficult against the two new white balls and in those conditions you know you'll have to dig in a bit, but there was a real naivety in the way that they played for spin against Ravindra Jadeja when there wasn't any.
It was a clear case of good players messing up so now they've got to make sure they put it right. I'm sure they will, be it tomorrow, Sunday or this summer in England; England have not become a bad side overnight and they know from the first match in this series that India can be beaten in India, even if that's not easy.
As a rule, when a player is selected to play for England I like to give him the whole series to prove himself, but after two batting collapses I do believe that it's time for England to make a change.
Craig Kieswetter has scored only 42 runs in three innings and while that's only marginally worse than Morgan, now might be the time to look forward and see what the next generation of wicketkeeper-batsmen has to offer - whether that is Jos Buttler or Jonny Bairstow.
I'd be happy to go down that road because if neither is able to develop their skills behind the stumps, you know you've always got someone of the quality of Matt Prior waiting in the wings who could be parachuted in.
Neither Bairstow nor Buttler is the finished article - if you speak to Marcus Trescothick about Buttler, he'll tell you that he needs a little bit of work to do with his wicket-keeping. But he'll also say Buttler's a fantastic batsman who deserves a decent run in the side.
On the bowling front I'd stick with Jade Dernbach for the remainder of the series, even though he's going at almost eight runs an over in this series and above six in his career.
Stats don't tell the whole story, though, because Dernbach has played almost a third of his 21 ODIs in India - as tough a place as there is to bowl seam - particularly in powerplays.
By his own admission he has not bowled at the level that he would like, but I'd stick with him because he offers something different, something new.
He's definitely got something about him and I, for one, don't want every England bowler to bowl in the same way.
But I was surprised that Cook gave Dernbach the new ball the other day; I'd like Tim Bresnan to take over that role in Mohali.
Watch the fourth one-day international between India and England, live from 6am on Wednesday on Sky Sports 1 HD.