Defending against the person who has the disc is a central part of the defensive strategy (colloquially "marking"). The defensive "marker" counts aloud to 10 seconds, which is referred to as "stalling". If the disc has not been thrown when the defending player reaches 10, it is turned over to the other team. "Stall" can be only be called after the defender has actually counted the 10 seconds. In order for the "mark" to be considered as counting all the way to ten, the thrower must throw the disc before the mark is able to say the "T" in the word ten. If the mark is accused of counting too fast (called a "fast-count"), then the thrower can call a violation, in which the mark then has to subtract two seconds from their previous stall count. There can only be one player defending in a radius around the person who has the disc unless that player is defending against another offensive player. The marker must stay one disc's diameter away from the thrower and must not wrap their hands around the thrower, or the person with the disc can call a foul ("wrapping").