A meaningful share of goals come from set pieces, and clubs have professionalised this area in a way that was uncommon a decade ago.
The proportion
Set pieces account for a substantial fraction of goals in most leagues, varying by season and competition.
Which makes it a high-return area relative to the training time it consumes.
Open play attacking is harder to influence through coaching, since it involves far more variables.
Why specialists emerged
The area rewards detailed preparation, opposition analysis and repetition.
Which is a discrete workload that a specialist can own without disrupting the head coach's priorities.
Several clubs have publicly credited specialist appointments with measurable improvement.
What they actually work on
Delivery zones, blocking and screening runs, timing of movement, and defensive assignments.
Which is choreography, and it takes repetition to execute against a moving defence.
Attacking routines are designed against the specific defensive scheme the opponent uses.
Zonal and man marking
Zonal defending assigns areas, man marking assigns players, and most teams use a hybrid.
Which is frequently discussed as though one were obviously correct.
Each fails differently — zonal systems concede to runs into gaps, man systems to blocks and picks.
Blocking
Legal obstruction of defenders' paths, borrowed conceptually from other sports.
Which is the main innovation of recent years and is refereed inconsistently.
Where it is permitted, it substantially advantages the attacking side.
Throw-ins
Increasingly treated as a set piece with dedicated coaching.
Which sounds trivial and represents a large number of possessions per match.
Retention rate from throw-ins is measurable and varies significantly between teams.
Long throws
Returned to prominence as an efficient way to create chances.
Which was previously dismissed as unsophisticated, and analysis suggested otherwise.
Watching for it
Look at the movement before the ball is delivered rather than at the delivery.
The blocks, decoy runs and starting positions are where the work is, and they happen in the two seconds nobody watches.
Corner routines
Near post flicks, back post attacks, short corners and deliberate second-ball setups.
Which are selected against the opponent's defensive structure rather than run identically each time.
Teams keep a repertoire and choose based on pre-match analysis.
Free kick delivery
Direct attempts have declined in frequency as conversion rates were measured honestly.
Which shifted many free kicks toward crosses and worked routines.
The specialist free kick taker remains valuable and is used more selectively than before.
Defensive set piece analysis
Identifying which opposition players are threats and where deliveries typically go.
Which informs marking assignments per opponent rather than a fixed scheme.
Goalkeeper starting position is part of this and is coached specifically.
Penalties
Preparation includes goalkeeper tendencies and taker routines.
Which is well studied, and structured preparation improves outcomes measurably in shootouts.
The economics
A specialist coach costs relatively little against the value of additional goals.
Which is why the role spread so quickly once early adopters demonstrated returns.
Data availability
Detailed tracking of set piece outcomes made the area measurable.
Which is why investment followed — the returns could be demonstrated to boards.
Expected goals from set pieces is now a standard reporting metric internally.
Personnel
Height, aerial ability and delivery quality are recruited for specifically.
Which shows in squad composition at clubs that prioritise the area.
A single excellent delivery specialist changes the value of every aerial threat in the squad.
Time allocation
Set piece work competes with everything else in a limited training week.
Which is why teams differ so much in execution quality.
What to watch
The five seconds before a corner is taken contain the work.
Which is where the blocks are set and the runs are timed.
Broadcast cameras rarely show it, which is why it goes unnoticed.
Restart types
Goal kicks, kick-offs after conceding and quickly taken free kicks are all coached deliberately at well-organised clubs.
Which extends the category well beyond corners and free kicks near goal.
Rehearsed kick-off routines have produced goals within seconds of restarts.
Lower levels
Set piece organisation is the single highest-return coaching investment in amateur football.
Which requires only repetition and clarity rather than technical quality.
Goalkeeper preparation
Keepers are coached specifically on positioning for crosses, on organising the wall and on communication.
Which is a distinct part of the discipline and is frequently assessed separately.
Wall organisation for free kicks is a rehearsed routine rather than an improvised arrangement.
The honest assessment
Marginal gains here are among the cheapest available in the sport.
A final observation
The clubs that improved most in this area did so by treating it as a distinct discipline with its own staff, analysis and training time rather than as something squeezed into the end of a session.
The results were measurable within a season, which is unusual for any coaching intervention.
Which is why the appointments spread through the leagues within a few seasons of the first ones being made.