Lineup Management for Rec Leagues: Build Your Best Roster

Rosterlytic's lineup system adapts to your sport, giving you visual field diagrams, drag-and-drop ordering, and even chemistry-based suggestions. Here's how to get the most out of it.

Creating a lineup

Captains can set up lineups for any game:

1. Open a game from the Games screen
2. Go to the Lineup tab
3. Tap Edit Lineup

From here, you'll see a sport-specific view with open position slots. Tap a slot to assign a player, or tap a player from the available list to place them.

Sport-specific views

Rosterlytic displays lineups differently based on your sport:

Hockey

• Line tabs — Switch between 1st, 2nd, 3rd, and 4th lines
• Forward positions — LW (Left Wing), C (Center), RW (Right Wing)
• Defense positions — LD (Left Defense), RD (Right Defense)
• Goalie — Separate goalie slot
• Lines feed directly into the chemistry system (more on that below)

Basketball

• Court diagram — 5 starting positions (PG, SG, SF, PF, C)
• Assign players to their primary position on the court

Soccer

• Field diagram — Position slots arranged in your formation
• Assign players to positions across the field

Volleyball

• Position slots — Setter (S), Outside Hitter (OH), Middle Blocker (MB), Right Side (RS), Libero (L), Defensive Specialist (DS)
• Assign players by rotation position

Flag Football

• Offense-focused — QB, WR, RB, C
• In rec flag football everyone plays both sides, so Rosterlytic focuses on offensive assignments

Softball / Kickball

• Fielding positions — Standard diamond positions (P, C, 1B, 2B, SS, 3B, LF, CF, RF)
• Batting order — Separate drag-and-drop list for your batting lineup (see below)

Batting order

For softball and kickball, the batting order is managed separately from field positions:

1. In the lineup editor, switch to the Batting Order tab
2. You'll see all assigned players in a list
3. Drag and drop players to reorder them
4. The order is saved automatically

This lets you set your defensive alignment and batting order independently.

Your batting order also feeds directly into the Line Chemistry system. For softball and kickball, consecutive batters in the order are treated as batting pairs for synergy calculations. So if your 3rd and 4th hitters consistently produce runs together, that shows up as a high-chemistry batting pair. Keep this in mind when arranging your order — the data can reveal which back-to-back hitters create the most damage.

Lineup suggestions

Rosterlytic can suggest optimal lineups based on player data:

1. In the lineup editor, tap the Suggestions button (lightbulb icon)
2. The algorithm considers:
   • Player availability — Who has RSVP'd yes for the game
   • Synergy scores — How well players perform together (based on historical data)
   • Position fit — Where each player performs best
3. Review the suggestion and tap Apply to use it, or dismiss and adjust manually

Locking positions

If you already know where certain players should go:

1. Assign them to their positions first
2. Then tap Suggestions
3. The algorithm will fill in the remaining slots around your locked choices

This is great when you have a core group that always plays together but need help filling out the rest.

Line Chemistry

Rosterlytic tracks how well players perform together in position-based combinations across all 9 sports. This feeds into both lineup suggestions and player profiles.

Chemistry zones by sport

Each sport tracks combinations that make sense for that game:

• Hockey — Forward lines (LW/C/RW) and defensive pairs (LD/RD)
• Basketball — Backcourt pairs (PG/SG) and frontcourt trios (SF/PF/C)
• Soccer — Back line, midfield, and attack combinations
• Volleyball — Setter-hitter combinations
• Flag Football — QB-receiver connections
• Softball — Battery combos (pitcher-catcher) and batting pairs
• Kickball — Batting pair synergy

How chemistry is calculated

Every time you enter stats for a game that has a saved lineup, Rosterlytic records which players were in the same position zone and how they performed together. Over time, this builds a chemistry profile.

The synergy score is based on core performance metrics including performance differential, combined stats, and win rate — weighted appropriately for each sport.

Star ratings

Synergy scores translate to a 1-5 star rating:

• 75+ = 5 stars
• 60-74 = 4 stars
• 45-59 = 3 stars
• 30-44 = 2 stars
• Below 30 = 1 star

Confidence levels

Chemistry data also shows a confidence indicator (Low, Medium, High) based on how many games the combination has played together. A 5-star rating based on 2 games is less reliable than a 4-star based on 15 games.

Where to see chemistry

• Player Profile > Chemistry tab — See which teammates a specific player has the best chemistry with
• Lineup Editor — Synergy indicators appear when assigning players to positions
• Team Stats > Chemistry tab — View top combinations across the season by zone

Applying lineups to a season

If you run the same lineup most weeks, you don't have to set it up for every game:

1. Create your lineup for one game
2. Tap the Apply to Season option
3. The lineup will be copied to all future games in that season

You can still adjust individual games afterward without affecting the others.

Tips

• Set lineups before game day — Players can see the lineup in advance and know where they're playing
• Use suggestions as a starting point — The algorithm is smart, but you know your team best
• Track chemistry over time — The more games you log with lineups, the better the synergy data gets. For a deeper dive into how synergy scores work, read our Line Chemistry explainer
• Don't forget the batting order — For softball/kickball, field positions and batting order are separate, so make sure both are set