Entities mentioned:
- Amari Cooper: Self-preservation, Professional pride, Recognition
- Las Vegas Raiders: Competitive spirit, Ambition, Legacy
- NFL: Control, Professional pride, Legacy
- Cleveland Browns: Competitive spirit, Ambition
- Dallas Cowboys: Competitive spirit, Ambition
- Buffalo Bills: Competitive spirit, Ambition

Article Assessment:
Credibility Score: 75/100
Bias Rating: 50/100 (Center)
Sentiment Score: 45/100
Authoritarianism Risk: 20/100 (Strongly Democratic)

Bias Analysis:
The article presents a balanced account of Cooper's career and retirement decision, citing multiple sources and providing context. It maintains a neutral tone without favoring any particular team or perspective.

Key metric: NFL Player Retention and Career Longevity

As a social scientist, I analyze that Amari Cooper's sudden retirement decision highlights the complex interplay between player health, career aspirations, and team dynamics in professional football. His struggle to maintain game readiness at age 31 underscores the physical toll of the sport and its impact on player longevity. The frequent team changes in Cooper's career also reflect the business side of the NFL, where player value is constantly reassessed. This case study provides insights into how player decisions affect team strategies and the broader implications for talent management and retention in professional sports.