Norm did mention something related, primarily what happens in a SD game, where you have seen over 1/2 or over 3/4 of the deck, and the RC is (say) 1 or 2, but the TC becomes 4 or 8. But even with such a high TC, your advantage might be zero, such as when there are only 10's left. Fortunately, you can't lose in that specific case. Unfortunately, you also can't win. It's uncommon of course...