You might be interested in this hand which Andrew Robson chose to mention in his column in The Times last weekend. You can download it from the link below. I am repeating the post as some of you were unable to use the link I provided last time.
I was sitting North, but please don’t ask me what the score was on this hand! 7D was bid and made in one room by our opponents, while 3NT was down 1 in ours when the 3-0 diamond break came to light, meaning I could only score two of the nine Diamonds as tricks. Suffice it to say that I was happy not to be playing this one in my high stakes money bridge game! It is clear for South to bid 4D over 3NT, even if the 3-0 break was well against the odds.
Jonathan
Andrew Robson Bridge in Oxford 
