There are many reasons why an asphalt tennis court will crack, the most common being “age.”. Asphalt is, in simple terms, a slow-curing concrete. When new, asphalt will stay pliable and soft, when compared to poured concrete. When new, asphalt can withstand the severe winter cold because it can flex with the heave of a frost.
https://longislandtennismagazine.com/article/why-does-my-tennis-court-crack