You should say what 'it' is - the economical bowling or wickets, etc. It should also be 'the West Indies' instead of just 'West Indies'. Also the phrase '1% back into the game' is not really the best wording of that. It probably would have been better if you had used a word instead of a percentage. I'm not really sure what you could have written instead though. I probably would have said that they had a glimmer of hope or something like that.
Should be 'in these last 30...' - just a general grammar thing. Because there are more than 1 delivery remaining you use 'these'. Again, it should be 'The West Indies fans' and 'the West Indies win'
This section is pretty good. It feels slightly disjointed because of the short sentences, but that's not always a bad thing.
Because you've used the word 'some', you are referring to more than one misfield and therefore it should be 'misfields' or 'some poor fielding'.
That first sentence isn't structured too well. 'the over where only 2 runs were needed' could be changed to 'when only 2 runs...' and then a full stop placed after it. Then you could start the next sentence by going 'He took a wicket...'
Apart from that, the grammar and spelling was pretty good. A few small things you should fix, like the use of 'The' before West Indies, use of plural terms when referring to the singular, and vice versa, and a few issues with sentence construction, but apart from that there were no huge problems were I couldn't understand what was said, and no spelling mistakes (that I could find!).
A pretty good update, and the way you use youtube is great.