A one percenter (1%er) is a statistic kept in Australian rules football, and relates to a variety of actions which benefit the team, but are infrequent or defensive.
It has been standard for a long time for a coach to tell his team to "keep doing the one percenters," and this essentially meant that players should keep applying pressure on opponents, by doing the little extra efforts which make turnovers more likely.
In 1995, one percenters were recorded by statistician Paul Callery during the 1995 AFL Season on Magic 1278AM Radio in Melbourne.
There are four actions which constitute a one percenter according to official AFL statistics: knock-ons, spoils, smothers, and shepherds.
[2] A knock-on is using the hand, either clenched or open, to tap the ball to the advantage of a team-mate, without ever taking possession of the football (except out of the ruck).
Hurrying (or corralling) an opponent is the act of putting them off balance without laying a tackle, while he is taking his kick or handpass.