“The team seems to flow better when A and B play together.” Coaches may notice patterns like this but want evidence to review them. This guide explains a practical way for school, youth, and club teams to record point differential by five-player lineup. It is a rough indicator for local coaching, not an advanced model built on NBA-scale data.
What lineup analysis measures
A lineup is the five players on court together. Add the points scored and allowed while each lineup is on court. The difference is its plus-minus (+/−): if a group scores 10 and allows 6 during its stint, its plus-minus for that stint is +4. A player’s individual plus-minus is influenced by teammates and opponents, so it should not be treated as a standalone rating of that player. Looking at a five-player group instead asks which combinations were on court while the team gained or lost ground.
Record substitutions and the score
You do not need a special scouting system to begin. Note the score and time whenever players substitute. Each interval between substitutions is a stint; assign its scoring margin to the five players on court during that interval. Paper notes can work, though the number of possible lineups makes it practical to start with combinations that played the most minutes.
Three ways to read the numbers
Account for time and possessions
Plus-minus tends to grow with playing time. A group at +6 over 10 minutes cannot be compared directly with one at +4 over two minutes. When possible, compare points scored and allowed per possession, or ratings per 100 possessions: offensive rating (OffRtg), defensive rating (DefRtg), and net rating (NetRtg), the difference between the two. See the Japanese ratings guide for more detail.
Consider the opponents
A point differential depends on the opposing lineup too. A group may look strong if it spent time against reserve players. Note who the opponent had on court during the intervals you are reviewing.
Look at pairs or trios as well
Five-player combinations multiply quickly, and any exact group may have limited minutes. Reviewing a pair or trio that appears together more often can provide more observations. If you are curious about A and B, track the score margin during their shared minutes across games.
Do not draw a conclusion from one game
Small samples are volatile. A lineup’s +8 in one game might reflect a real fit, a favorable opponent, or a few shots that happened to fall. Adjusted Plus-Minus (APM) methods use regression to try to separate player effects from teammates and opponents; they require much more data and careful modeling than most youth or school teams have. The Japanese source quotes former NBA coach Gregg Popovich criticizing plus-minus metrics. That quotation is context, not a substitute for evidence about an individual lineup.
For a local team, watch whether the same pattern appears across several games, then use video and coaching observation to investigate why. Treat the statistic as a question to explore, not proof that a player or combination caused the result.
Do not pick starters from plus-minus alone
Starting decisions also involve role and position balance, distributing players across units, development goals, and the needs of the final minutes. Lineup analysis can confirm or challenge a coach’s impressions and prompt useful questions; the coach remains responsible for the decision.
Lineup reports in BoardStrategist
The scorebook can aggregate five-player lineup figures when substitutions are recorded. The game stats screen includes Lineups, Combos for groups of two or more players, and interval ratings. Season-level lineup totals are available in the all-player stats screen. A game without substitution data cannot be grouped this way. The Japanese source states that lineup analysis is a Pro feature; check the current pricing page and features page for current availability.
Frequently asked questions
Does plus-minus mean anything for youth teams?
It can be a useful clue, but small samples make it unstable. Look for a repeated pattern across games and consider opponents and minutes.
How can I check whether two players work well together?
Track the margin during their shared minutes across multiple games, then review those stretches in context.
How do on/off and plus-minus differ?
Plus-minus totals the margin while a player is on court. On/off compares team performance with that player on court against performance when they are off. Both are affected by sample size and context.
Should our team calculate APM or RAPM?
Usually not with a small number of games. Begin with lineup or pair margins, playing time, and possessions, and avoid treating noisy estimates as precise player rankings.