The summoner name or tag is incorrect
SILVER I
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Match History for Patch: 16.10.1
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Champion Stats for Patch: 16.10.1
Champion Mastery
lvl: 191
2,522,976
lvl: 157
1,700,739
lvl: 40
409,010
lvl: 35
353,747
lvl: 29
297,052
lvl: 24
257,076
lvl: 21
242,596
lvl: 20
203,011
lvl: 19
187,232
lvl: 18
200,680
lvl: 16
162,368
lvl: 14
128,714