As many of you may have already noticed, there's been a recent change in arenas that can cause you to gain 0 points when you win.
In the meantime, we will continue to monitor the situation and make further adjustments if necessary.
What does this mean? Basically if your personal CR is higher than your MMR you will get 0 points when you win. However, losing will still cause you to lose points for both your MMR and CR. It is speculated that the cause of this hotfix could be a way to combat rating boosts, or perhaps a way to fix the higher than normal ratings we are seeing this season. It was mentioned on Twitter however, it was a fix to a bug that specifically happened in 5.4.7.
In my opinion, this could encourage the top of the ladder to sit their rating. This is due to the fact that the large majority of the top achieved their rating before the fix was implemented. However, inflation could negate this issue since the last season of an expansion usually lasts the longest and longer seasons seem to have higher inflation.