I think I saw this scene on tv during the late 1990s to early 2000s. Though I’m not sure if it was a movie or a tv show but it was a white, teenage girl who was leaving a house but was followed outside by a teenage boy who hits her on the back of her head with a blunt object (either a baseball bat or golf club or something like that). The guy then killed her off-screen by repeatedly hitting her but as he kills her, it showed a close-up of her hand on the grass she was killed on as she stops moving