Colin Munro's knock of 50* off 14 balls during New Zealand's second T20 International against Sri Lanka on Saturday broke multiple records. It's the second fastest half-century in T20 Internationals and the fastest T20 half-century by a Kiwi. Incidentally, the previous fastest T20 half-century by a Kiwi was scored by Martin Guptill (19 balls) in the same match.