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On the first night, Garen, Sion, Riven, Galio, Nidalee, Kassadin, Ezreal, Cho'Gath, and Urgot participated. Riven and Jarvan were eliminated. Katarina, Swain, Kog'Maw, Malzahar, Teemo, Karma?, Zilean, Poppy, and Twitch? (questionable, as they don't appear in the newspaper) did not participate. There were 9 roles for Rudoy.
On the second night, Cho'Gath and Urgot did not participate, but Kog'Maw did. Rudoy now has 8 roles remaining (Kog'Maw is not him). Let's assume Caitlyn was eliminated. Then one of the "zoblochnye" is a Mafia member. For Rudoy, the probability of being a negative role is 3/8 (why is he specifically a Doctor? Please explain). Zubr has several more options.
I like Rudoy's behavior less and less. He's already becoming rude. Are you repeating Jack's actions from the end of the previous game? You clearly didn't play as a Serial Killer.