In this quiz, you have to name the top 20 batsmen who have hit the fastest fifties (in terms of balls) in men’s Test cricket.

The record for the fastest fifty in terms of both deliveries and minutes belongs to the same batsman, who blasted a 21-ball half-century in 2014. Some big hitters follow on the list, with a couple of surprising names sneaking in as well.

You have five minutes to guess all 20 players. Only last names will suffice.