India's T20 World Cup campaign has come down to one game. A virtual quarterfinal at Eden Gardens. Beat West Indies, and Suryakumar Yadav's men are through to the semifinals. Lose, and they're out.
But there's a third player lurking over Kolkata - rain. Here's how the semifinal race looks, scenario by scenario.

Both India and West Indies have two points from two Super 8 matches. West Indies hold a slight Net Run Rate (NRR) advantage, but that becomes irrelevant if there's a result.
If India win, they qualify for the semifinals, if West Indies win, they qualify for the semifinals. It's that straightforward. No calculators required. No NRR debates.
After a brief spell of unexpected rain earlier this week that snapped a long dry run, Kolkata is set to offer perfect cricketing conditions on Sunday. There is virtually no rain threat for the Super 8 clash at Eden Gardens.
AccuWeather forecasts clear evening skies with minimal cloud cover (around 17%). The temperature at toss time is expected to be around 27°C, easing to roughly 24°C later in the night. While humidity could climb from 46% to nearly 69% as the game progresses, the chance of precipitation during match hours stands at zero - meaning weather interruptions are highly unlikely.
If the match is abandoned due to rain or any other interruption without a result, both teams would finish with three points.
That's the brutal part. In a washout, India's fate would not be in their hands. Their earlier loss to South Africa would come back to haunt them.
There's another layer: South Africa face Zimbabwe in the final Super 8 fixture. If the Proteas suffer a heavy defeat, the winner of India vs West Indies could potentially top the group on NRR.
Group topper faces New Zealand in the semifinal and the Group runner-up takes on England.
So, not only is qualification at stake - the semifinal opponent could shift depending on margins.
India began their Super 8 campaign with a setback against South Africa but bounced back with a commanding win over Zimbabwe. West Indies beat Zimbabwe as well but were handed a heavy defeat by South Africa.
That leaves both teams level on points - and separated only by decimals in NRR. In tournaments like this, momentum matters. But so does weather.
A washout sends West Indies through and knocks India out.
Eden Gardens is set for a knockout atmosphere. Whether it's decided by bat and ball or by dark clouds overhead could shape India's World Cup destiny.