For walking on uneven bumpy surfaces, fantastic! I don't play tennis any more, but just use these for short (400 yard) walks on bumpy, tilted sidewalks, bumpy parks and paths. The extra width of the sole prevents any accidental roll-overs, imperative for me as I have an old broken 5th metatarsal. I'm sure this factor would be great for tennis too. I was worried about the toe box depth, never saw these in a store. I have a mild hammer-toe on my second toe, and there's plenty of room in these. I'd be tempted to say it's the flexible mesh, but my toe never even hits the mesh. Speaking of the mesh, I can wear these all day with no hot feet. Not good for rain, though, get leather.