Try this: in column A, put the numbers 0 to 255 (a zero in A1, A2: =A1+1 , drag down).
Next, B1: =DEC2BIN(A1,8) -> drag down. That's basically the binary representation of the numbers.
Now you basically have your answer: all possible combinations, where every digit of the number represents one game and 0 means "team A wins" and 1 means "team B wins". You could grab the individual digits with a MID function.
Cheers,
Koen