Minor league broadcasters do not have access to the same breadth of data available at the Major League level.
Tabulating advanced metrics such as launch angle, exit velocity, and spin rate can only be done through the use of tracking technology, and not with the naked eye.
In many cases, however, minor league broadcasters can develop and maintain their own advanced database, or “poor man’s Statcast.”
It requires some extra hustle, but the raw inputs are available and can be tracked by hand following each game.
Swinging strike rate (also referred to as swinging strike percentage or SwStr%) represents a hitter’s percentage of swings and misses per total pitches seen (or the swings and misses generated by a pitcher per total pitches thrown).
Not surprisingly, swinging strike rate correlates extremely well with strikeouts. It can also be used to forecast a potential rebound/regression in the event a player’s swinging strike rate and strikeouts are misaligned.
Growcasting has created a Swing Strike Rate calculator, which can be downloaded here: 2019 Swinging Strike Rate Calculator.
The excel sheet was built for the American Association’s 100-game schedule, but you can adjust as necessary for whatever league you are broadcasting in. The sheet is otherwise ready for immediate use, and also tracks pitches per plate appearance/batters faced.
However, this resource can only be utilized if you track pitches, which we detailed in this post.