Shreyas Iyer came up with a third straight half-century in the series to help India brush aside Sri Lanka by six wickets and register a hat-trick of clean sweeps in white-ball cricket. With the win, India extended their unbeaten streak in T20Is to 12 matches. AS IT HAPPENED | SCORECARDThe home side went into Sunday's affair with a batsman short, and lost skipper Rohit Sharma in the second over of the innings. The onus once again fell on Shreyas to anchor the chase. Iyer accepted the challenge wholeheartedly, slamming a 45-ball unbeaten 73, laced with nine hits to the fence and once over it, to help the team race to the target 0f 147 with 19 balls to spare. Ravindra Jadeja gave him good support with a 15-ball undefeated 22. Iyer announced his arrival with an exquisite cover drive off Binura Fernando, before welcoming Lahiru Kumara with three classy boundaries to get things going. Like the previous outing, he launched leg-spinner Jeffrey Vandersay over the midwicket boundary to raise his fifty in grand style.