Yeah - what may happen, though, is that in a series a 20k beats a 9k, and thus becomes 15k. Then they beat them again and become 12k. Then they beat them again and become 9k. Resulting in at least 2 “outlier” looking games.
That’s not weird, that’s just someone ranking up.
What’s wierd is that the same person that ranked up can get wacked back down again…