Yes, topped is a Scrabble word!

Adjective

1. Having a top of a specified character

Verb

1. Be superior or better than some standard

2. Pass by, over, or under without making contact

3. Be at the top of or constitute the top or highest point

4. Be ahead of others; be the first

5. Provide with a top or finish the top (of a structure)

6. Reach or ascend the top of

7. Strike (the top part of a ball in golf, baseball, or pool) giving it a forward spin

8. Cut the top off

9. Be the culminating event

10. Finish up or conclude