Learn Dutch: Mijn broer is de beste speler. - My brother is the best player.

Yes! Just like in English (good, better, best), the Dutch word goed has an irregular comparison pattern. The forms are goed (good), beter (better), and best (best). In this sentence, we are using the highest level to say he is the best.

Why is there an -e on the end of beste instead of just best?

Because it is acting as an adjective directly in front of a noun (speler). In Dutch, when an adjective comes before a de word (it is de speler), it usually gets an -e added to the end.

If I drop the word speler, do I still use the -e on beste?

Yes! If you simply say Mijn broer is de beste (My brother is the best), you keep the -e because it still implies the noun (the best person/player) is there. However, if you are describing how an action is performed rather than describing a noun, you use het best without an -e, like Hij speelt het best (He plays the best).

Is speler built from the verb spelen (to play)?