Scoring a hundred in Test cricket is an achievement in itself, but going on and racking up a triple century requires an incredible combination of skill, luck, patience and stamina.
Ever since Andy Sandham's effort in 1930, up to and including Brendon McCullum's effort against India in February, it has only happened on 28 occasions.
And although it is a significant individual milestone, whether a triple century is a good thing or not in terms of the game is an interesting question. Out of all the matches in which one has been scored, just 10 have produced results.
Additionally, another curious statistic can be seen in the following table:
|Number of Triple Centuries|
Sure, the amount of Test cricket has increased in later years, but clearly something in the format, whether quality of wicket or quality of batsman, has shifted.
Anyway, this is the brief story behind each and every triple century recorded in Test cricket so far.
*statistics courtesy of espncricinfo.com unless specified.