The summoner name or tag is incorrect
snow #0907
GOLD III
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Match History for Patch: 16.9.1
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Champion Stats for Patch: 16.9.1
Champion Mastery
lvl: 33
389,720
lvl: 24
274,991
lvl: 20
234,586
lvl: 14
124,271
lvl: 13
152,563
lvl: 11
136,056
lvl: 10
78,574
lvl: 9
74,947
lvl: 9
70,667
lvl: 8
64,503
lvl: 8
54,097
lvl: 7
51,009