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Who is cheating?
What rule are they breaking?
Playing vs 700 ranked while he is 1900 ranked, he should play vs higher players.He just kicks high players or he say he has slow so he has always a excuse to not play against high players. This user is also famous of boosting teamrank whith his previous accounts. Aka Alex and Luca
Alex also plays on Saitama. 1100 while his main is over 1700 to boost Kisura
Here you see that he adds his main http://prnt.sc/dok7oe
Im sure there are many more links but I just found those 3 links
1 more thing to add Saitama. also use cheat engine in some games.