Currently competitive deathmatch stats for are not updating correctly. They show that I’ve played only one game of it, but I have actually finished placements with 10 games. Consequently all stats are incorrect. This has persisted for 2 days now and multiple restarts of the game.
If you think it’s a bug report it here…
https://us.forums.blizzard.com/en/overwatch/c/bug-report
The devs will look into it.
If I live in Europe and we have EU forums, why would I need to report to US forums…
Any development takes place in the US. To keep things as easy as possible, it was decided to collect all sorts of bugs in a single forum on the US website. Therefore, the link provided by Star is the correct one. 
Thanks for your report!
Also, please keep in mind that this forum is dedicated towards technical issues, such as crashes, latency, patching and installation issues.
Pachimari