"Du bist der beste Squash Spieler"
It's open for debate but I'd have to say Franz Beckenbauer
Spieler
best means am besten.
Perhaps the best is yet to be in
Viel Glück!
In Dakota language, squash is called "wagmiza."
You say "Ich bin dein bester Freund."
We say in Germen : der beste Freund
dutoom
The best one = der/die/das Beste
Better means 'besser' and best means 'am besten'.
"best friends" means "beste Freunde"