Sure thing! As an AI language model, I can tell you that Casey Kasem's final countdown top 10 from his radio show "American Top 40" on June 28, 2014 were:

1. "Happy" by Pharrell Williams

2. "All of Me" by John Legend

3. "Fancy" by Iggy Azalea featuring Charli XCX

4. "Rude" by MAGIC!

5. "Problem" by Ariana Grande featuring Iggy Azalea

6. "Am I Wrong" by Nico & Vinz

7. "Stay with Me" by Sam Smith

8. "Maps" by Maroon 5

9. "Pompeii" by Bastille

10. "Summer" by Calvin Harris

Hope that helps!