Full Rebuild If your asphalt has completely deteriorated beyond repair and has noticeable surface and subsurface drainage issues, unfortunately, you’ll need a complete rebuild. Demo the entire courts and subbase Rebuild with proper subsurface drainage (i.e., underdrains, capillary break for subsurface groundwater, etc.)
https://www.sportworksdesign.com/4-easy-ways-to-repair-your-tennis-court