1. A gradual or sudden decrease in the performance, quality, or competitive level of a sports team or work group
The team's decline in the second half of the season was attributed to injuries and poor coaching decisions.
O declínio do time na segunda metade da temporada foi atribuído a lesões e decisões ruins do técnico.
2. A period during which a team loses games, loses key players, or loses fan support
After winning the championship, the team experienced a dramatic decline.
Após ganhar o campeonato, o time experimentou um declínio dramático.