I was just the only Silver in my League of Legends Ranked Game. xD
Me: S2 Nami
My team: G2 Kaisa, G3 Cho'Gath, G3 Katarina, G1 Kha'Zix
Enemy Team: PLATINUM IV Jarvan IV, G4 Orianna, G1 Tristana, G2 Garen, G2 Zyra
-9 LP.
Me: S2 Nami
My team: G2 Kaisa, G3 Cho'Gath, G3 Katarina, G1 Kha'Zix
Enemy Team: PLATINUM IV Jarvan IV, G4 Orianna, G1 Tristana, G2 Garen, G2 Zyra
-9 LP.
Your mmr is rather high as you play with plats in your placements.
The plat 4 J4 probably had like Gold 3 or 4 mmr. He was probably on a loss streak or something. And at least it was only -9 LP