Fast count:

Double team: If a defensive player other than the marker is within 10 feet of any pivot of the thrower without also being within 10 feet of and guarding (3.E) another offensive player, it is a double team. However, merely running across this area is not a double team.

Disc space:

Vision blocking: If the marker deliberately blocks the thrower's vision, it is a vision blocking violation.

Fast count, double team, disc space, straddle, wrapping, and vision blocking are marking violations.

Only the thrower may call a marking violation, and to do so must call out the name of the specific marking violation.

When a marking violation is called, play does not stop. The violation must be corrected before the marker can resume the stall count with the number last uttered before the call minus one (e.g. "stalling one...two...three..." "fast count" "...two...three...").

If the defense commits a marking violation after being called for a marking violation during the same stall count (15.A.1) but before the thrower is in the act of throwing, the thrower may choose to either call another marking violation or to treat the marking violation as a general defensive violation (17). To treat it as a general violation, the thrower must call "violation."

The marker may contest a marking violation by calling "violation." This contest is treated as the call of an offensive violation, and the Continuation Rule (17.C) applies.