In 2021, Martin Akayezu of Rwanda, hammered a 16-ball joint sixth fastest fifty in T20 internationals against Ghana.
In 2017, West Indies top order batsman Shai Hope was absolutely unstoppable, he reached 50 in 16 balls against Bangladesh.
In 2019, Faisal Khan of Saudi Arabia got to a 50-run mark in 15 balls, while playing against Kuwait in regional T20 contest.
On 10 Jan 2016, the Eden Park in Auckland witnessed absolute carnage, Colin Munro scored a 50 against Sri Lanka in 14 balls.
Playing for Austria, Mirza Ahsan played the knock of his life against Luxembourg in 2019, he scored half-century in 13 balls.
In 2007, Yuvraj Singh set up the world record for fastest 50 in just 12 balls, record still remains intact even after 15 yrs.