You cannot pick any team you have previously chosen, even if you have bought back in. If you are right, you pick TWO winners Friday. If you make the correct picks on Friday and beyond you only have to select ONE team to win.
Losers: $20 Dollar Buy in, Max of Three Buy Backs (Total of $80)
You can buy back in for $20 additional dollars, but you must pick FOUR winners for Friday.
If you are wrong on Friday, you may buy back in but have to pick FIVE teams that are going to win.
If you get one wrong on Saturday you can buy in again for the last time and must select all SIX games correctly on Saturday.
You don't need to buy back in, but what's the chances you will be wrong twice in a row?