When did Chelsea win the league?

Related questions

1. Which team did Chelsea beat to win the Champions League?
2. What happens if Chelsea win the Europa League?
3. Who are Arsenal's rivals?
4. What teams have never been relegated?
5. When last did Chelsea win the Champions League?
6. When did Chelsea win Europa League?
7. Which part of London is Chelsea?
8. Did Rangers die?
9. Why did rangers get demoted?
10. Has Arsenal won Europa Cup?

Tags

1. #triumphed
2. #became
3. #title
4. #chelsea
5. #arsenal
6. #recent
7. #since
8. #blackburn
9. #while
10. #fourth
11. #times
12. #claim