Cold streak odds, is this possible???

[AaronBrown]

Do you mean an 85% favorite against a random hand or an 85% favorite against the best hand the other player might hold?

Also, when did the pot get over one full buy-in? If it got high while you were an 85% favorite against any hand then this streak is much less likely that if it got big only after the other player hit one of his outs.

A specific example would help a lot so we could estimate the probability.