Library › NFL Analytics › Part III: Team-Level Analytics › Chapter 17: Team Building and Roster Construction › Key Takeaways: Team Building and Roster Construction
Key Takeaways: Team Building and Roster Construction
One-Page Reference
Core Concept
Roster Construction is the strategic allocation of limited resources (salary cap, draft picks) across positions to maximize winning potential within competitive windows.
The Salary Cap
Metric
2023 Value
Notes
Salary Cap
$224.8M
Hard limit
Avg Growth
~7%/year
Excluding COVID
Roster Size
53 players
+ practice squad
Avg per player
~$4.2M
If distributed equally
Position Value Hierarchy
Premium Positions (Pay Top Dollar)
Quarterback - 15-20% of cap for elite
Edge Rusher - 8-12% of cap
Left Tackle - 8-11% of cap
Cornerback - 7-10% of cap
Value Positions (Draft or Value FA)
Wide Receiver - Market inefficient, draft preferred
Defensive Tackle - Important but replaceable
Linebacker - Declining positional value
Safety - Good value in FA market
Avoid Premium Spending
Running Back - Short careers, high replacement level
Tight End - Unless elite receiving threat
Draft Value Principles
Expected Value by Round
Round
Hit Rate
Surplus Value
1st
50-55%
$15-25M over 4 years
2nd
35-40%
$8-12M over 4 years
3rd
25-30%
$4-6M over 4 years
4-7
15-20%
$1-3M over 4 years
Surplus Value = Market Value - Rookie Contract Cost
Free Agency Economics
Market Inefficiencies
Buyers typically overpay by 15-25%
First-week signings worst value
Age 27-29 sweet spot for value
Avoid : 30+ RB, 32+ WR, injured history
When FA Makes Sense
Contending team filling specific need
Prove-it deals (1-year, incentive-laden)
Position premiums (QB, EDGE on short market)
The QB Dilemma
Scenario
Cap Impact
Roster Effect
**Elite QB ($45M)** | 20% of cap | $180M for 52 players
**Average QB ($25M)** | 11% of cap | $200M for 52 players
**Rookie QB ($5M)** | 2% of cap | $220M for 52 players
Rookie QB Window : 4 years to build elite roster around cheap QB
Competitive Windows
Window Phases
Phase
Duration
Strategy
Rebuilding
2-3 years
Accumulate picks, avoid long contracts
Competitive
2-3 years
Balanced draft/FA approach
Contending
2-4 years
Trade picks for win-now players
Declining
1-2 years
Transition or extend window
Key Factors
QB age and contract status
Core player contracts remaining
Draft capital available
Cap flexibility
Build vs Buy Decision
Factor
Build (Draft)
Buy (FA)
Timeline
2-3 year development
Immediate impact
Cost
Cheap (rookie deals)
Expensive (market rate)
Risk
Draft bust potential
Overpay/decline risk
Control
4-5 years minimum
2-3 years typical
Roster Construction Rules
DO:
Build through the draft
Pay premium only for premium positions
Maintain 15-20% cap flexibility
Extend core players before FA
Target value FA (age 26-28)
DON'T:
Pay RBs on long-term deals
Sign 30+ players to 4+ year deals
Spend 50%+ on offense OR defense
Chase FA in first week
Mortgage future for non-QB players
Quick Calculations
Cost per WAR
efficiency = total_cap / total_war
# Good: <$8M per WAR
# Average: $8-12M per WAR
# Poor: >$12M per WAR
Draft Pick Value (Jimmy Johnson)
Pick 1: 3000 points
Pick 10: 1300 points
Pick 32: 590 points
Pick 64: 270 points
Roster Age Target
Average: 25-26 years
Under 26: 15+ players
Over 30: <8 players
Red Flags
Warning Sign
Implication
QB > 18% of cap
Must excel everywhere else
Dead money > 10%
Poor contract management
Avg age > 27.5
Window closing
< $20M cap space
Limited flexibility
< 6 draft picks
Reduced talent pipeline
Remember
Cap is a constraint - Every dollar matters
Positions aren't equal - Pay for premium, draft the rest
Timing matters - Windows open and close
Draft > FA - For building sustainable success
QB economics dominate - Most important roster decision
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Further Reading: Team Building and Roster Construction