I've had a number of players down the years who are excellent performers with really good stats, but even though they have a high stamina rating, their condition seems to deteriorate rapidly during a match. By the hour mark their fitness is often down around 50-60%, and if you leave them on then they come off 'injured' on around 30% even though after the match they don't actually have an injury.

Is there any way of combatting this? It's really frustrating because these players are generally very good and see plenty of the ball, but it's not really worth keeping them if they're only good for 45 minutes at a time. I was wondering if perhaps there is a hidden stat that may influence it?