How do you compute the odds to be at the average like 9/18 but to finish >9, 7 times in a row, could I considerate it as below a average run ?

Wrong forum

spoilers: you're doing something wrong

50% obviously, either you do or you don't.

There are tons of factors, the question seems a bit irrelevant.

If you reach the final 18 in 100 tournaments, and your assumptions are valid, this is not a surprise at all. More often than not (i.e. 73% of the time) you'll have a seven-loss sequence somewhere along the way. Same story for a seven-win sequence, too.

Some math is here: https://math.stackexchange.com/quest...heads-in-a-row.

The math jockeys put the prospect of a seven-anything sequence as 94/64 in 100 trials, which means basically that it should happen about 1.5 times. That prospect becomes 94/128, or 73%, if winning is different than losing, which it usually is, except in math analysis.

If you've played only 40 such tournaments, the odds of a seven-loss sequence are less. A different method of calculation puts them at 13%. Math is here: https://math.stackexchange.com/quest...-flipping-a-co

Returning to poker, it's always good to make sure you're factoring in all the times that you were distracted, on tilt, playing too long, etc. When you do that, are you still just as likely to cash as not? It takes a lot of discipline to accept a (lower) win rate that includes everything, rather than just our optimal playing level.

I presume the talk is about 180-men? The question to think about is: are you getting to final 18 with reasonable stacks or are you playing very tight on the bubble and typically have 5-10BB when you make it into the money. If you usually get to the final 18 with a sub-average stack - there's your answer!