Junk

Shots that have no velocity. Just as there have been extremely successful baseball pitchers who threw nothing but junk (knuckle balls, slow curves, etc.), so there are successful tennis players who do the equivalent in tennis terms. They never – well hardly ever – hit the ball hard. Instead they float up slices, and dinks, and drop shots, and lobs, and moonballs until their opponents drop through weariness or sheer exasperation, for a good junk player is infuriatingly steady, nearly never making an unforced error, and also seems tireless.