Playing tennis - know your hand signals

My husband and I played our first tennis match today where I couldn't call out the score or call balls out. I did tell my opponents I was on voice rest and will be making calls with hand signals. They were super nice and it was not too bad. It was hard when I thought a serve was out and we played it so then I decided I would call balls out in my conversational voice. We lost but had fun and didn't freeze. However, I was not so good outside the fence. I just love interacting with people. Starting to feel like an Avox from Hunger Games.