Tom Banton scored the second fastest half-century in Big Bash League history after reaching the mark in just 16 balls for Brisbane Heat on Monday.
The Somerset opener, who made his England T20 debut in November, struck seven sixes - including five in succession in one Arjun Nair over to bring up the milestone - and two fours as the Sydney Thunder attack was taken apart.
Only West Indies star Chris Gayle has scored a faster 50 in the competition's history, needing just 12 balls when playing for Melbourne Renegades against Adelaide Strikers in 2016.
Banton was eventually dismissed for a 19-ball 56 after being caught on the boundary, ending a blistering opening stand of 90 in just five overs with Chris Lynn.
Brisbane eventually won by 16 runs on the Duckworth-Lewis method after numerous rain interruptions blighted the match.