Telestrator From Wikipedia, the free encyclopedia Jump to navigation Jump to search This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed. Find sources: "Telestrator" – news · newspapers · books · scholar · JSTOR ( May 2012 ) ( Learn how and when to remove this template message ) In sports, the telestrator is typically used in conjunction with instant replay to diagram and analyze a recent play. A telestrator is a device that allows its operator to draw a freehand sketch over a moving or still video image. Also known as a video marker , this device is often used in sports and weather broadcasts to diagram and analyze sports plays or incoming weather patterns. The user typically draws on a touchscreen with a finger or uses a pen...