What Does Down by Contact Mean? NFL vs College

In the NFL, a runner is down by contact when opponent contact is connected with him touching the ground with a body part other than his hands or feet. A knee, elbow, hip or shoulder can end the down. The rule treats the wrist as part of the hand and the ankle as part of the foot.

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An NFL runner who merely slips untouched can usually regain his feet and continue. That is the key difference from the basic college rule.

What counts as contact?

A defender can cause the fall or touch a runner who is already on the ground. A forceful tackle is unnecessary. The NFL also explicitly ends the play when an opponent touches the ball while it is possessed by a grounded runner.

For example, a receiver completes a diving catch without being touched. He can normally get up and run. If a defender touches him while he remains grounded, the play ends there.

The receiver must first complete the catch process. A bobble against the turf before possession is complete raises a catch question, not simply a question about whether the defender touched him.

Untouched does not always mean live

A runner can give himself up, and a quarterback kneel ends the play without requiring a defender's touch. Going out of bounds or another dead ball condition also ends the down.

Those exceptions are covered more fully in the guide to exactly when a runner is down. The broad lesson is that down by contact is one way a play ends, not the entire dead ball rulebook.

The college difference

Under NCAA rules, a ball carrier is generally down when a body part other than a hand or foot touches the ground, even without opponent contact. An untouched college runner whose knee hits after a slip cannot simply stand up and continue. The place kick holder provision is a specific exception.

NFL and college broadcasts can therefore show very similar falls with different legal outcomes.

Why the timing matters

If the runner loses possession before being down, the ball can be a live fumble. If qualifying ground contact after a defender's touch comes first, a later loose ball does not create a turnover.

The ball's location at the relevant dead ball moment determines the spot, subject to forward progress. The runner's knee tells you when he went down; it does not necessarily tell you where the football should be marked.

Keep learning

• Fumbles: Compare possession loss before and after the runner is down.

• Forward progress: Learn why a standing runner can also be stopped.

• The holder exception: See why a knee on a place kick does not always end the play.

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Rules reviewed October 10, 2026. Official 2026 NFL rulebook; NCAA official football rules. NFL Rule 7, Section 2, Article 1 and NCAA Rule 4, Section 1, Article 3.