Courts with a firm covering — fast, but speed of flight of a ball on them more low than on grassy courts. At the heart of them there can be concrete or asphalt which become covered from above by the synthetic layer giving to a surface colour, and also some characteristics отскоку a ball. Отскок also can vary a little on speed and height on different types of a firm covering. Some variants of coverings have received own names, for example: Plexipave, Rebound Ace, DecoTurf. The players possessing strong giving, as a rule, have advantage at game on such courts.

On courts with a firm covering the Open championship of Australia (covering Plexicushion) and the Open championship of the USA (covering DecoTurf) though, initially, both of them were spent on grassy courts are spent.