How hard do you hold the handle on the serve compared to, say, groundstrokes? When I pronate (especially on kick serves), I sometimes let go of the racquet and it hits the ground in front of me really hard. Do pros tend to hold the racquet with a tighter grip in order to prevent this from happening? I look like an absolute fool sometimes, and I just resolve with hold the racquet tighter for later serves. Or... should I have a loose grip first, but tighten grip on contact? I read somewhere that you were supposed to hold the handle relatively loose, but on the swing, I would literally throw my racquet.