The purpose of this study was to examine the absolute reliability of both ROM-soleus and ROM-gastrocnemic tests for estimating triceps surae flexibility throughout a repeated measures design. 40 professional futsal players completed 3 measurement sessions of dorsi-flexion ankle ROM with knee flexed (ROM-soleus) and extended (ROM-gastrocnemic) with a 2-weeks rest interval between consecutive sessions. The absolute reliability was measured through the statistics change in the mean between measures (CM), typical percentage error (CVET) and intraclass correlation coefficients (ICC). The results of the current study showed that both ROM-soleus and ROM-gastrocnemic present high absolute reliability scores (CM < 2%; CVET < 6.5%; ICC > 0.8).