The 5-a-Side to 11-a-Side Substitution Guide for New Coaches
Everything changes when your team size doubles. Here is how to handle it.
Your first season coaching 5-a-side felt manageable. Eight kids, four on the field, rotate at halftime. Simple. Then the club moved your group up to 7-a-side with 12 players, and suddenly you are juggling substitutions mid-match while trying to remember who played left last week.
Every format has its own substitution math. This guide walks through each one so you know what to expect before your first match.
5-a-side (ages 5 to 7)
Typical squad: 6 to 8 players
Field spots: 4 outfield plus 1 goalkeeper
Substitution style: Roll on, roll off
At this level, most leagues allow unlimited rolling substitutions. Players come on and off freely, often without stopping play. The challenge is not logistics. It is attention. Five-year-olds on the bench forget they are supposed to go on. Five-year-olds on the field forget they are supposed to come off.
What works: Pair players up. When one comes off, the other goes on. Keep the pairs consistent across matches so the kids learn the routine. With 8 players and 5 spots, you only have 3 on the bench at any time. Easy to manage.
Watch out for: The temptation to keep your "best" players on longer because "they are having fun." At this age, everyone is having fun. Rotate evenly.
7-a-side (ages 8 to 9)
Typical squad: 10 to 12 players
Field spots: 6 outfield plus 1 goalkeeper
Substitution style: Fixed intervals or rolling, depending on league
This is where substitution management gets real. With 12 players and 7 spots, you have 5 on the bench. That is too many to track informally.
The math: In a 40-minute match, two halves of 20 minutes, each player should get roughly 23 minutes if you have 12 players. That means rotating groups of 3 to 4 players every 10 minutes.
What works: Divide the match into four 10-minute segments. Assign players to three of four segments. Write this down before the match. Do not try to calculate during play.
Watch out for: Goalkeeper time. If a child plays 20 minutes as goalkeeper, they have "played" a full half but had zero outfield development time. Track goalkeeper and outfield time separately.
9-a-side (ages 10 to 11)
Typical squad: 13 to 15 players
Field spots: 8 outfield plus 1 goalkeeper
Substitution style: Stoppages only, typically
Now you are in structured substitution territory. Most leagues require substitutions during stoppages: goal kicks, throw-ins, or at the referee's discretion. You cannot just wave kids on and off.
The math: 15 players, 9 spots, 6 on the bench. A 50-minute match means each player should get about 30 minutes. You need to rotate 3 to 4 players at roughly 12-minute intervals.
What works: Plan two substitution windows per half. At each window, rotate 3 players. Pre-assign which group rotates at which window. Carry a printed plan so you do not lose track.
Watch out for: Positional changes. Rotating players into unfamiliar positions is development gold, but without a plan you will end up with three centre-backs and no midfielder. Map out positions for each rotation, not just who is on.
11-a-side (ages 12 and up)
Typical squad: 16 to 18 players
Field spots: 10 outfield plus 1 goalkeeper
Substitution style: Limited (3 to 5 per half, depending on league)
The biggest format jump. Many leagues limit substitutions to 3 to 5 per match. With 18 players and limited subs, equal playing time becomes genuinely difficult without advance planning.
The math: 18 players, 11 spots, 7 on the bench. A 60-minute match with 5 subs means most bench players get 15 to 20 minutes at best. If you want everyone to play at least half the match, you need to plan your starting lineup to rotate across matches, not just within a single game.
What works: Track cumulative playing time across the season. Rotate your starting eleven match by match. Within a match, use your substitution windows strategically. Bring on the players who had least time last week. A spreadsheet or app that tracks season totals is almost mandatory at this level.
Watch out for: The "sub at halftime" trap. If you use all your subs at halftime, you have no flexibility for the second half. Spread substitutions across the match.
Quick reference table
| Format | Squad | Field | Bench | Match length | Per player |
|---|---|---|---|---|---|
| 5-a-side | 8 | 5 | 3 | 20–30 min | ~15–19 min |
| 7-a-side | 12 | 7 | 5 | 40 min | ~23 min |
| 9-a-side | 15 | 9 | 6 | 50 min | ~30 min |
| 11-a-side | 18 | 11 | 7 | 60 min | ~37 min |
Target times assume truly equal distribution. Your numbers will vary based on actual squad size and goalkeeper rotation.
The common thread across all formats
Regardless of format, three principles hold.
Plan before the match. The coach who walks onto the pitch without a substitution plan will default to gut feeling. And gut feeling favors the kids who are already playing well, not the ones who need minutes.
Track goalkeeper time separately. A child who plays 25 minutes as goalkeeper and 5 minutes outfield did not get equal playing time. Goalkeeper is a valuable position, but outfield minutes build different skills.
Use tools that scale with you. The buddy system works at 5-a-side. It breaks at 11-a-side. Build habits now, whether that is a notebook, spreadsheet, or app, that will survive format changes.
The bigger your format, the harder mental math becomes. By the time you reach 9-a-side, no coach can reliably track 15 players, multiple periods and goalkeeper rotations in their head while also coaching. That is the moment to upgrade the tool, not the moment to admit defeat. For more on the methods coaches actually use during a live match, see our guide to managing substitutions without a clipboard. And if you are tempted to lean on a fixed-interval timer, here is why that approach struggles in practice.