Mohamad Asghar Stanikzai (R) of Afghanistan watches as Marlon Samuels (2R) of West Indies walks off the field not out at the end of the 3rd and final T20i match between West Indies and Afghanistan at Warner Park, Basseterre, St. Kitts, June 05, 2017. Pic/AFP

Marlon Samuels was at his most imperious with an unbeaten 89 to guide the West Indies to a seven-wicket victory over Afghanistan in the final fixture of the three-match T20 International series at Warner Park in St Kitts on Monday.