i think if you are talking about the straight run at the top of the 3rd column, that it comes after a 4loss, not a 4 win...so normal streak rule applies there. Starting with the same beginning of this shoe I believe that a BPBBPPPPP gets you to a -10. Please check that. Also, i believe you might have to be wrong footed going into it for it to happen. It looks like a ZZ into a 5 straight is a weakness also. Im sure some of the math geeks can calculate the frequency