Worm is one of the most popular graphs in cricket, allowing you to estimate the speed of a bowler during a day/session in an ODI match.
Visually, the worm is a graph that displays the speed of throw (Speed (mph)) along the Y-axis over the game time intervals, counted by balls (Ball) along the X-axis.
In a real-world graph, the worm is considered the ideal way to gauge bowler’s serve rate throughout a day’s playing session. For example, Chris Jordan changed the feed of the serve more often than Mark Wood.
Also, according to the graph, you can compare the frequency of tempo changes, i.e. estimate the change in constant speed. For example, we can mention Liam Dawson, who kept almost the same speed plus / minus 3-4 miles per hour.