What Is a Pass Sonar Chart?

A pass sonar is a data visualization that shows, for a single player or a whole team, the direction and average distance of every pass made from a given zone of the pitch. Instead of dots or lines, it uses short radial spokes fanned out from a position marker, so a single glance shows not just where a player touched the ball but which way he tended to send it.

Where the Pass Sonar Comes From

The chart grew out of the same data-visualization tradition that produced radar charts and shot maps: a response to the problem that raw pass totals and completion percentages, on their own, say almost nothing about a player's actual function on the pitch. Two midfielders can complete the same number of passes at the same success rate and play completely different roles — one recycling the ball sideways under no pressure, the other switching play under pressure to break a defensive line. A number cannot separate those two players, but a picture of pass direction can. The sonar format was built specifically to answer the question standard pass maps could not: not just where the ball went, but which way a player habitually pointed it.

How the Chart Is Actually Built

The construction is more mechanical than it looks. The pitch is first divided into a grid of zones, usually based on a player's average touch position within each area of the pitch he occupied during a match or a season. For each zone, every pass a player made from that starting point is grouped by compass direction — forward, backward, left, right, and the diagonals between them. Within each directional slice, the length of the spoke represents the average distance of passes sent in that direction, and the width or shading of the slice typically represents how often the player passed that way relative to his other options. The result is a small starburst at each zone: long spokes toward goal indicate a player who looks to progress the ball forward from that area, while short, evenly spread spokes suggest a player recycling possession in short combinations regardless of zone.

Some versions of the chart layer in a third dimension, shading each spoke by pass completion rate rather than volume, which turns the same shape into a risk map: long, dark-shaded forward spokes describe a player who not only tries progressive passes from a zone but also completes them at a high rate, which is a different and more valuable signal than volume alone.

What a Sonar Shows That a Pass Network Cannot

A pass network map answers a relational question — who passes to whom, and how often those connections repeat during a match. A heat map answers a positional question — where on the pitch a player spent his time. The pass sonar sits in the gap between the two: it is anchored to position, like a heat map, but instead of describing presence it describes intent, in the specific sense of directional tendency. A full-back's heat map might show him occupying the same wide corridor as a wing-back from a different team, and his pass network might show a similar number of connections to teammates, yet the two players' sonars can look completely different — one dominated by spokes pointing infield toward a central midfielder, the other dominated by spokes pointing forward down the line toward a winger. That distinction, invisible in the first two chart types, is exactly what the sonar format exists to surface.

Team-level sonars work the same way at a larger scale, aggregating every player's zone into a single shape that reads as the team's collective passing tendency by area of the pitch. A team with a strong field-tilt signature — spending a disproportionate share of possession in the attacking half — will typically show sonars in its own defensive and middle-third zones that lean heavily forward, since players in deep positions are consistently looking to move the ball up the pitch rather than sideways or backward.

Comparing Two Players in the Same Position

The format is at its most useful side by side. Placing two centre-backs' sonars next to each other, for example, can separate a genuinely progressive ball-player from one who is simply completing a high volume of low-risk passes. Both defenders might show similar total pass counts and similar completion rates in a raw statistics table, yet their sonars can diverge sharply: one shows long spokes pointing into midfield and toward the far side of the pitch, describing a centre-back who regularly tries to break lines or switch the point of attack; the other shows short spokes clustered toward the nearest full-back or the goalkeeper, describing a centre-back whose passing is almost entirely about retaining possession safely. Neither shape is inherently better — a team's tactical plan may call for exactly the second profile — but the comparison makes a real stylistic difference visible in a way that season-ending totals cannot.

The same side-by-side logic extends to comparing a single player against himself across two competitions or two seasons. A full-back who shows forward-leaning spokes in one league and much shorter, safer spokes in another is often revealing something about the tactical demands of the two environments rather than about his own ability, since passing tendency is shaped as much by a coach's instructions and a team's overall approach as it is by individual preference.

Practical Uses Beyond Style Description

Recruitment and scouting are the most common practical application, since a sonar chart lets an analyst check whether a transfer target's passing tendencies actually match what a new team needs before a signing is made, rather than relying on a reputation built from highlight reels or vague scouting notes. A club chasing a deep-lying playmaker who can switch play under pressure can screen out candidates whose sonar shows mostly short, lateral spokes even if their overall passing numbers look strong, because those numbers may simply reflect a low-risk role in their current team rather than the specific skill being sought. The chart also has a coaching use inside a single season: comparing a player's sonar from matches the team won against matches it lost can surface whether his passing tendency actually changes in different game states, which is a more concrete starting point for a tactical conversation than a general sense that "he plays it safe when we're losing."

Broadcasters and analysts use a lighter version of the same idea for in-match storytelling, showing a live or half-time sonar to illustrate a tactical shift — a winger suddenly showing spokes pointing infield instead of toward the byline, for instance, as visual evidence that a team has adjusted its width in response to the opponent's shape.

Reading a Single Player's Sonar in Practice

For an individual, the useful comparison is rarely the shape in isolation but the shape against role expectations. A deep-lying playmaker whose zone sits just in front of the back line should show a mix of long forward spokes, indicating switches of play and progressive passes, alongside shorter lateral spokes for safe recycling under pressure. A winger's sonar in an advanced wide zone should lean toward spokes pointing infield and toward goal, reflecting cutbacks and crosses rather than passes back toward his own half. When a player's actual sonar diverges sharply from what his nominal role would predict — a supposed progressive passer whose spokes are short and lateral across every zone — that gap is often more informative than any single passing statistic, because it flags a player who is being used, or is choosing to play, differently from his listed position.

What the Chart Cannot Tell You

Like any visualization built from a single match or a short run of matches, a sonar chart is vulnerable to small-sample noise: a handful of unusual passes in an unfamiliar tactical setup can distort a shape that would look very different across a full season. The chart also does not, on its own, encode game state. A team chasing a losing scoreline late in a match produces a different sonar shape than the same team protecting a lead, and blending those situations into one season-long chart can average away a pattern that only shows up in specific circumstances. Nor does the chart capture off-ball movement or the passes a player did not attempt because a lane was closed — it only describes the passes that were actually played, not the decisions behind them. A sonar chart is a description of behaviour, not an explanation of it, and reading one well means pairing it with context about the match state, the opponent's shape, and the player's role rather than treating the picture as a complete account on its own.

How to Read a Pass Sonar Step by Step

• Start with the zone markers, not the spokes: confirm where on the pitch the player or team actually operated before reading direction.
• Compare spoke length across zones, not just within one — a player who is long-passing everywhere reads differently from one who is long-passing only in deep zones.
• Check for shading or color coding that separates volume from completion rate, since the two tell different stories.
• Weigh the shape against the player's listed role before concluding anything about style or effectiveness.
• Treat single-match sonars as illustrative and season-long aggregates as the more reliable read.

RubiScore's player and team data pages present zone-based passing breakdowns that follow this same logic, letting a shape like this be checked against a full season of touches rather than a single snapshot, with the underlying figures published on rubiscore.com.