We know that speed is a physical quality that isn't particulalry stable, detraining can occur in as little a 5, so it's a fitness component that we like to keep an eye on.
The problem is that there's often a reluctance to test 'game speed' in players for fear of muscle injury.
Maybe there's an alternative...
This study showed strong correlations between loaded/unloaded vertical and horizontal jump tests and sprint performance.
This is good new because it opens up the potential to frequently assess a player or athletes performance and training level using simple, safe, efficient and effective jump tests.
Jump around...