The suitability of an in silico docking configuration is usually assessed by its sampling or scoring power. The former refers to the ability to reproduce binding poses of reference ligand-receptor co-crystal structures, often measured by the root-mean-square deviation (RMSD) of the atomic coordinates. The latter refers to the ability to rank binding affinities based on the docking score. In the ideal scenario, the docking configuration displays excellent sampling and scoring power, but this is typically not observed.