Tree diagram: a best-out-of-five hockey playoff

[jessimessi]

in a best out of five hockey playoff, the winner of the series is declared once a team wins three games. ties not allowed. draw a tree diagram with all the possible outcomes. I can't figure out how to represent this in a tree diagram

 

[Cubist]

You have two teams A and B. Consider the very first game.. A or B will win. Can you draw a tree diagram that represents this? Now consider the second game of the series and extend the tree diagram. Can you complete the tree now? Please post your attempt...