Isocloud fit to the components of KIC 9850387 on the log T_eff − log g diagram. The red regions correspond to the best-fitting isocloud, and the pink regions represent the isoclouds in the 95% HPD interval of the fit. The black regions on the isocloud represent the log T_eff − log g values corresponding to the dynamical masses of the individual components. The grey curves are MESA evolutionary tracks with f_ov = 0.005 and log D_mix = 0.0 (solid), f_ov = 0.04 and log D_mix = 0.0 (dashed), and f_ov = 0.04 and log D_mix = 4.0 (dotted) with their corresponding masses (in units of M_⊙) indicated at the ZAMS of each track. The inset plots are magnified regions around the position of the primary (top) and secondary (bottom) component.