166
Silver can duo with:
Iron — Gold
Hidden MMR can add restrictions: for example, Emerald to Diamond II players can't queue with someone who has Master-level MMR. Riot's rules
166
661
Silver III
Support
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248
172
281
EUW
Silver IV
Jungle
+
Top
240
Turkey
Silver II
Bot
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394
175
54
352
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39
133
Summoners
ARAM
Iron
Bronze
Gold