Out of Bounds in Soccer: When Is the Ball Really Out?
When watching or playing soccer, one of the most common sources of confusion is whether the ball is actually out of bounds. The rule is strictly defined by the International Football Association Board (IFAB), yet it often leads to disputes on the field. Unlike in basketball or American football where touching the line means out of bounds, soccer follows the “wholly crossed” principle. A ball is only considered out of play when the entire ball has crossed the outer edge of the touchline or goal line, whether on the ground or in the air. As long as a fraction of the ball is aligned with the line, it remains in play. Understanding this rule is crucial for players, coaches, and fans to avoid prematurely stopping play or incorrectly protesting a referee’s decision.
In soccer, the ball is out of bounds only when it has completely crossed the touchline or goal line. If any part of the ball is overhanging or touching the line, it is still in play, regardless of whether it is rolling on the ground or flying through the air.
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The “Wholly Crossed” Rule Explained
The fundamental principle of out of bounds in soccer revolves around the entire sphere of the ball. Law 9 of the IFAB Laws of the Game states that the ball is out of play when it has wholly passed over the goal line or touchline. This means that even if 99% of the ball is over the grass outside the pitch, but 1% is still hovering over the painted white line, the ball remains in play.
Many beginners mistakenly assume that if a player steps out of bounds, the ball is also out. However, a player’s position is completely irrelevant. A player can be standing completely out of bounds and still legally play the ball, as long as the ball itself has not fully crossed the line.
| Scenario | Ruling (In or Out) |
|---|---|
| Ball touches the line | In Play |
| Half of the ball crosses the line | In Play |
| Player is out of bounds, ball is inside | In Play |
| Entire ball passes the outer edge of the line | Out of Play |
In the Air vs. On the Ground: The Imaginary Plane
Another crucial aspect of the out of bounds rule is that it applies three-dimensionally. You must imagine a vertical plane extending upwards from the outer edge of the boundary line into the sky. If the ball is curving through the air and breaks this imaginary plane, but curves back in before hitting the ground, it is technically out of bounds.
Conversely, if a ball is cleared high into the air and travels directly above the boundary line, it remains in play as long as part of the ball is breaking that vertical plane. This often happens during corner kicks where the ball might swing out and back in; if the whole ball crosses the plane, the referee should whistle for a goal kick or throw-in.
Never assume the ball is out until you hear the referee’s whistle. Play to the whistle, especially when the ball is rolling along the touchline, to avoid giving away easy goals.
Who Determines if the Ball is Out?
The responsibility for calling the ball out of bounds lies primarily with the assistant referees (linesmen). They position themselves along the touchlines and are best placed to look directly down the line to judge the imaginary plane. When the ball goes out, they raise their flag to signal the center referee.
In modern professional soccer, the Video Assistant Referee (VAR) and automated goal-line technology also play massive roles. Goal-line technology specifically uses high-speed cameras to instantly notify the referee’s watch if the ball has wholly crossed the goal line, completely removing human error from tight goal-scoring scenarios.
Optical illusions are very common. From the stands or on television, the angle can make a ball appear out of bounds when a small fraction of it is still overhanging the line. Trust the assistant referee’s positioning.
What Happens After the Ball Goes Out?
Once the ball is confirmed out of play, the game restarts based on where it exited and who touched it last. If it crosses the touchline (the long sides of the pitch), play restarts with a throw-in awarded to the opponents of the player who last touched the ball.
If the ball crosses the goal line (the short sides) without a goal being scored, it results in either a goal kick or a corner kick. A goal kick is awarded if the attacking team touched it last, while a corner kick is given if the defending team had the last touch.
Frequently Asked Questions
Can a player be out of bounds while playing the ball?
Yes, a player can be completely out of bounds and legally play the ball. The rule only applies to the position of the ball, not the player’s feet.
Is the ball out if it touches the line?
No, the ball is considered in play if any part of it is touching or hovering over the line. It must wholly cross the outer edge of the boundary to be out.
What happens if the ball curves out and comes back in the air?
The ball is out of play. If the entire ball crosses the vertical plane of the boundary line in the air, the referee must stop play.
Does goal-line technology apply to the touchlines?
No, goal-line technology is only installed to monitor the goal lines between the goalposts. Touchline decisions still rely primarily on assistant referees and VAR.
Mastering the boundary rules in soccer helps you appreciate the tight margins and controversial calls that make the game so exciting. Next time you see a winger tip-toeing down the sideline, remember the wholly crossed rule before shouting at the referee. Keep playing to the whistle and improve your game understanding today.
