What are the distractions that happened to cause me not to watch the ball?
In tennis our mind requires focus on pattern of play and execution to that pattern. We like to watch a player moving at the net, that movement characteristic draws our attention to their their poaching. Our focus changes from executing our shot to watching their movement of player. When a server standing wider when they serve we tend to focus on a particular area of the court that they might Serve, again focuses on that area or what could happen and not on watching the ball. a hard shot when the ball comes quickly Creates concern and we look up and do not watch the ball. The wind or sun can talk away the single minded focus of watching the ball. This is a challenge for every tennis player.