Pakistan's Shadab Khan (R) celebrates with team captain/wicketkeeper Sarfraz after dismissing West Indies' Sunil Narine. Pic/AFP

Bridgetown (Barbados): Spinner Shadab Khan (3-7) produced an outstanding debut performance as Pakistan completed a six-wicket victory over the West Indies in the first fixture of a four-match T20i series at Kensington Oval on Sunday.