Test submodel

Playing Quality:

Football pitch: Ball roll

Golf, Bowls to follow.


1. Grass height data only:


The ball roll, in metres, on a 'good' surface is

2. Grass height data with ground cover data:

Let's add a percentage ground cover (choose an option below) and also see what happens if the surface is dry or wet:



3. Results which correlate grass height, ground cover and whether the surface is either dry or wet:


Average Ball roll (m): Dry conditions


Average Ball roll (m): Wet, not ponding, conditions

Data based on published research and formulae extended to meet the requirements of this submodal.

ball roll measures

Playing quality: Ball roll

Long grass on a pitch will reduce the distance rolled by a football. If the grass is short then the surface might be too fast for the semi-professional and amateur game.
A short grass surface will reduce the amount of root growth that takes place and this will reduce the amount of games that can be played because the grass will be more easily kicked out and worn away than a pitch that has a strong well-developed root system, which is created by a longer grass surface.

A wet pitch will generally slow a football down, reducing the distance it rolls. This will be particularly noticeable on pitches with less grass cover as the wet bare areas will effectively stick to the ball.

A pitch with less ground cover will offer less resistance to a football and so it will roll a longer distance than is there are high amounts of grass cover.

This might seem like a good idea, but less grass cover means increased chance of a muddier surface, a reduced root system with a less stable surface, a more uneven surface, poorer playing experience and more game cancellations.

Footballer, ball, ground cover