The history of the six yard box 16 February 20
The markings of the penalty area in football had a strange evolution.
How fast would a pole vaulter hit the ground? 10 April 19
A sporting Fermi question
How to find a cricket pitch in a football pitch 28 February 19
The official dimensions of every adult football pitch in the world arose from quaint numbers chosen by a group of Victorians and Edwardians.
A one-in-17 million chance. Or was it? 16 November 17
In October 2017 two women golfers got a hole-in-one at the same hole. What were the chances?
Why UEFA is turning to ABBA 10 May 17
Penalty shootouts tend to favour the team that kicks first - so UEFA are testing out a new approach to make it fairer.
When the IBM speedometer says Raonic's serve is 144mph, is it misleading us?
The Game Theory of Penalty-Taking 2 July 16
When taking penalties, strikers - and goalies - seem to go for the corner too often.
From Quidditch to the Davis Cup 30 November 15
Sporting contests with flawed rules
Robshaw's Risky Decision 27 September 15
England's rugby captain was criticised for gambling for a win and losing. Here's the maths.
Momentum 27 April 14
Before playing Chelsea, Liverpool won 11 League games on the trot. They had momentum. But what does that mean?