1. Deepak Chahar - 6/7, 2019
Medium pacer Chahar jettisoned Shafiul Islam in the last ball of the 18th over and then returned to give marching orders to Mustafizur Rahman and Aminul Islam in the first two balls of the 20th over to complete the hat-trick. His 6/7 is now the best-ever figure in the shortest format of cricket.
2. Ajantha Mendis - 6/8, 2012
Ajantha Mendis, the Sri Lankan mystery spinner, took this haul against Zimbabwe in an ICC World T20 match at Hambantota that the Lankans won easily. But Mendis' career did not touch the heights that it was expected to and it was one of the last significant acts by the Lankan spinner who fizzed away.
3. Yuzvendra Chahal, 6/25, 2017
After Suresh Raina and MS Dhoni went hammer and tongs, India posted a healthy 202 for 6. But the M Chinnaswamy stadium has always been a batting paradise and England had enough firepower in their batting to make a first of the chase. After all they had Eoin Morgan, Jason Roy, Moeen Ali, Ben Stokes, Jos Buttler and Sam Billings in their ranks. But Chahal came and picked up 6 wickets for 25 runs to run through the English line-up. The visitors were bundled out for 127 as India emerged a comfortable 75-run winner.
4. Rangana Herath, 5/3, 2014
At Chittagong, the left-arm spinner Herath wrecked New Zealand with a wonderful spell in the ICC World T20. Sri Lanka were bundled out for 119 after Trent Boult and Jimmy Neesham took three wickets apiece. But Herath derailed the Kiwis with a five-wicket haul in 3.3 overs as they were skittled for 60. And only Kane Williamson managed to touch double figures with a 42.