I just reread the OP and i dont get this bit am i missing something?
If we have already given Phil Ivey 7K/Gus 2K/Kabbaj 1K, why do we deduct 10K off the total? That means we are paying twice. Unless of course you are working on Profit in wich case the lads who kept their 10K have now got $0.
Here is an example of a Fantasy Staker Scorecard:
1) Phil Ivey - 70%
2) Gus Hansen - 20%
3) John Kabbaj - 10%
If when the tournament has concluded, we find that Ivey has won $100,000 and Kabbaj has won $50,000 then your return would be 70% of $100,000 ($70,000) and 10% of $50,000 ($5,000), or $75,000 in total. You would have to deduct the $10,000 in stakes leaving you with a final Fantasy Bankroll of $65,000.