Originally Posted by NLBwell
It all depends who you played, so in that way, you were probably unlucky. If you have a really good day against a top 4.0 player who is having a bad day, you might win by a lot and get a strike against you. If you played great against a lower ranked guy and wiped him out, it probably wouldn't have affected you much.
Not exactly correct. The computer averages back when calculating the dynamic rating. So a strike occurs when a player strings several unexpected results together.
The rating obtained for each player is averaged with a maximum of their previous three dynamic ratings and that number becomes their new current dynamic rating. (Indirectly this connects the current dynamic to all previous matches but weights the four most recent matches more heavily.)
The reason for this averaging is to even out the ratings in cases where some unusual situation causes an atypical result.