I checked my Nuevo Map from last year, and there is no tennis court listed. We do not play tennis, so that has not been on my radar, but I only remember one on any of the Mayan properties and it was at Mayan Riviera, up on top of the building where they filter the water. (I never saw any one up there.) I checked Google Earth and that tennis court is still there. I could not see one on any roof at NV, but those buildings are really tall so I would be surprised if they had any tennis courts on them.
Nuevo is more about golf & pools. There are quite a few pools and a long stretch of beach.