Theoretical evolutionary tracks plotted in log g − T_eff diagram (left panel) and stellar radius (right panel) (from the main sequence up to the early-AGB) computed with thermohaline instability and rotation-induced mixing at solar metallicity for 4.0 M_⊙ (V_ZAMS = 144 km s^-1, solid black line), 3.0 M_⊙ (V_ZAMS = 136 km s^-1, orange long dashed line), 2.7 M_⊙ (V_ZAMS = 110 km s^-1, blue dashed line), and 2.5 M_⊙ (V_ZAMS = 110 km s^-1, red dashed line). Cluster members discussed in this study are indicated by green circle (HD 170231), square (HD 170174), and triangle (HD 170053).