Haven't been here a while, so this might not be new news.

http://www.twonix.com/index.jsp?action=ruin

Found this free download for a Longest Lossing Streak calculator based on mathematical probabilities (strike rates etc) which you put in. There used to be a good site that did this but it no longer operates.

Hope this post is useful for some people who like me, want to know more about the odds of success.