Currently in Diamond, having finished Rank 1 of my Plat division in S1, promoted to Diamond in S2, fell to Platinum in S3, returned to Diamond in S4, crashed back to Plat last second in S5, coasted back up to Diamond in S6, stayed in Diamond in S7, S8, S9, and S10, and returned to Plat in S11. I think I'm a good predictor but then again I would think that.

Take note: the market resolves NO if I'm demoted to Gold at the end of S10, and YES if I'm promoted back to Diamond.