The 5-a-Side to 11-a-Side Substitution Guide for New Coaches
Every format has its own math. The numbers come from your federation, not your gut. Here is what 5-a-side through 11-a-side actually looks like, with the rotation math worked out.
Your first season coaching small-sided ball felt manageable. A handful of kids, a few on the bench, rotate when it feels right. Then the club moves the group up to 7v7, then 9v9, then 11v11. Each step doubles or triples the variables, and the rotation that worked last year does not work any more.
Every format has its own math. And the numbers are not yours to invent — they come from the federation that runs your league. This guide walks through what 5-a-side, 7-a-side, 9-a-side and 11-a-side actually look like under US Soccer's Player Development Initiatives (PDI), so you know what to expect before kickoff. Your state association or local league may layer extra rules on top — recreational programs in particular often add minimum-play percentages — but the PDI sets the federal baseline.
A note on the numbers below
Match length, squad size and substitution policy vary not just by federation but by age group within a format. A U9 playing 7v7 does not play the same minutes as a U10 playing the same format. Throughout this guide we cite the US Soccer PDI numbers and name the age group each number applies to. If your league's rules disagree, your league wins.
5-a-side (4v4 in US Soccer)
Field: 4 outfield, no goalkeeper (US Soccer PDI specifies 4v4 with no GK at U6–U8; many recreational leagues run 5v5 with a goalkeeper instead at the same ages)
Typical roster: 6 to 8 players
Match length: 4 × 12 min = 48 min total
Ball / offside: Size 3, no offside
Substitutions: Unlimited, encouraged between quarters
This is the entry format for organised youth football in the US. PDI keeps the goalkeeper out at this level because the small field and short distances make a keeper unnecessary — and because every player getting outfield touches matters more at U6–U8 than learning the position. Many recreational programs (AYSO, US Club) do use 5v5 with a keeper at this age; either way, substitutions are unlimited.
The math: 7 players, 4 on the field, 48 minutes total. 4/7 of 48 = roughly 27 minutes per player.
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 7 players and 4 on the field, 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 (7v7)
Field: 6 outfield plus 1 goalkeeper
Typical roster: 9 to 12 players (PDI cap: 12)
Match length: U9–U10: 2 × 25 min = 50 min total
Ball / offside: Size 4, no offside, build-out line in effect (defenders retreat behind the line on GK possession; GK cannot punt or drop-kick)
Substitutions: Unlimited with referee permission
This is where substitution management starts to bite. With 12 players and 7 spots on the field, you have 5 on the bench at any moment, and the match is long enough that you cannot just hope it works out.
The math: 12 players, 7 on the field, 50 minutes total. 7/12 of 50 = roughly 29 minutes per player. With a smaller squad of 9, that climbs to about 39 minutes each.
What works: Divide the match into four roughly 12-minute windows. Pre-assign which players rotate at each window. Write this down before kickoff. Do not try to calculate during play.
Watch out for: Goalkeeper time. If a child plays 25 minutes as goalkeeper, they have "played" half the match but had zero outfield development time. PDI treats GK as a learning role at this age (no punts, build-out line forces playing out of the back), but track goalkeeper and outfield time separately.
9-a-side (9v9)
Field: 8 outfield plus 1 goalkeeper
Typical roster: 11 to 14 players (PDI cap: 14)
Match length: U11–U12: 2 × 30 min = 60 min total
Ball / offside: Size 4, offside introduced, GK can now punt and drop-kick
Substitutions: Unlimited
Now you are in structured-rotation territory. With 14 players and 9 spots, you have 5 on the bench at any moment. Two halves of 30 minutes give you a natural midway substitution window, plus stoppage opportunities inside each half.
The math: 13 players, 9 on the field, 60 minutes total. 9/13 of 60 = roughly 42 minutes per player.
What works: Two substitution waves per half. Rotate 3 to 4 players at each wave. With three waves total (including halftime), every player gets close to even minutes without the chaos of constant rolling subs.
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 (11v11)
Field: 10 outfield plus 1 goalkeeper
Typical roster: 14 to 18 players (PDI cap: 18)
Match length: U13–U14: 2 × 35 min = 70 min. U15–U16: 2 × 40 min = 80 min. U17+: 2 × 45 min = 90 min.
Ball / offside: Size 5, offside, full Laws of the Game apply
Substitutions: Unlimited at youth recreational level (US Youth Soccer, AYSO); competitive league play and ODP/college-prep often cap subs under FIFA-derived rules
The biggest format jump. The match is also longer — 70 to 90 minutes depending on age — so the per-player time is generous, but bench size and sub limits can complicate things at the competitive end.
The math: 17 players, 11 on the field, 80 minutes total (U15–U16). 11/17 of 80 = roughly 52 minutes per player. At 90 min with 18 in the squad: 11/18 of 90 = about 55 minutes each.
What works (recreational): Rolling rotation across both halves, swapping in 3 to 4 players every 15 to 20 minutes. With unlimited subs and re-entry, every player can comfortably reach 45 to 55 minutes in a 90-minute match.
What works (competitive, limited subs): Rotate your starting eleven match by match, not just within a single game. If your league caps subs at five per match, accept that bench players in any single match will get 15 to 25 minutes. Make it up by starting them more often the following weekend. Track cumulative time across the season.
Watch out for: The "sub at halftime" trap in limited-sub competitions. Burn all your subs at halftime and you have no flexibility if a player tires or gets injured in the second half. Spread substitutions across the match.
Quick reference table
| Format | Age | Field | Roster | Match length | Per player |
|---|---|---|---|---|---|
| 4v4 (5-a-side) | U6–U8 | 4 (no GK) | 6–8 | 4 × 12 = 48 min | ~24–32 min |
| 7v7 | U9–U10 | 7 (6 + GK) | 9–12 | 2 × 25 = 50 min | ~29–39 min |
| 9v9 | U11–U12 | 9 (8 + GK) | 11–14 | 2 × 30 = 60 min | ~39–49 min |
| 11v11 | U13+ | 11 (10 + GK) | 14–18 | 2 × 35–45 = 70–90 min | ~43–62 min |
Numbers reflect the US Soccer PDI baseline. Per-player time assumes equal distribution; your numbers will vary with actual roster size, goalkeeper rotation, and how strictly your league enforces minimum-play rules.
State and recreational rules layer on top
US Soccer PDI is the federal baseline. State associations and recreational programs add their own playing-time minimums on top of it.
- AYSO ("Everyone Plays"): Every registered player plays at least half of every match. Most enforced and most well-known recreational standard in US youth football.
- California Youth Soccer (CYSA): 50% minimum for formats through U12.
- US Club Soccer: Federation-aligned; minimum-play rules vary by member league.
- ODP and ECNL: Competitive pathways. Playing time becomes selection-driven from U13 onwards; no guaranteed minimum.
If you coach recreational soccer, the 50% rule is usually your floor. If you coach outside the US, your federation almost certainly publishes its own format and playing-time rules — see our country-by-country guide to fair playing time rules.
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 favours 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 — 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 14 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.