Whenever testosterone comes up, I always think of the study showing testosterone levels change in sports fans according to whether their preferred team wins or loses[1].
The interest for me is not so much in the question of testosterone and dominance, but more to do with how mere perception of events whose meaning is entirely culturally determined can mediate hormone levels in this way.
Winning at football is very different from winning at a fight, that is - you need to understand football's rules to understand who's won, whereas the winner of a fight is immediately clear.
Thinking about it, though, I guess ritualised proxies for fighting to establish dominance (like antler fights, etc.) might be thought to occupy an intermediate position.