CS:GO - Skill group after only 9 wins?

This is part of a screenshot which is several years old that I sadly lost (it's not faked). I never knew you could be awarded a skill group after only 9 wins.

How is that possible? Did I play so well that the system decided it only needs 9 "samples"?

The Counter-Strike Wikia states that:

Players without a skill group are limited to two competitive matches that result in wins or draws per day until they are placed in a skill group by winning 10 matches to get a rank (or drawing a match after the 9th win).

I'm assuming that like stated in the parentheses, you won 9 matches, and then got a draw, leading to you getting a rank, as well as, displaying only 9 wins on your profile.