Delayed All-In from the BB
I was involved in the following situation in a MTT:
I had 4BB left and was in the BB. My image was very tight. The SB was a very weak loose player with much larger stack. She habitually limped with marginal hands, and would call all-ins from tight players with hands like KJ.
There were no limpers this hand and she completed the SB. I had K6. Normally, this is a good hand to go all-in with, especially with my miserable stack.
However, given that I had virtually no FE left and given her calling tendencies, I decided that if I pushed now, she would have called me most of the time and then I would be about 50/50 to win.
Instead, I decided to check and push after the flop regardless of cards if it was checked to me. Since she was a loose passive player, and since I have checked behind before many times, I didn't think she would bluff post-flop.
That increases my odds
of winning to about at least 2/3 because 2/3 of the time she will not connect with the flop.
In that specific case, flop came A-high, she checked, I pushed and she folded.
In summary, sometimes it may be better to delay pushing after the flop in order to increase the odds of winning. This is especially applicable when there is little FE left for pre-flop push, but enough stack left that it would be significant on the flop.
The down-side of this play is that when you win, you don't double up. So basically we win more often, but a smaller amount. So if we are far from the money with a tiny stack, that is not necessarily a good play. But if we are close to the money, as I was, this increases the chance to get there without changing much the odds of making final table.