Excel 2007 : Count Consequtive Wins/Losses

Help Needed

I would like to be able to have a formulated count for consequtive wins or losses for each person in a data range. Below is some sample data that I would use. I was thinking I needed to use something with Countif but at this point it's a little too complicated for me. What formula could I use to accomplish what I want? Your help is appreciated, Thanks

Jack