Based on the photos, you're going to have an opportunity to do much more than mow and bag if they will let you. I would encourage you to push them - even if they think they do not want it initially - to let you do one field on a more complete program to show what you can do just make sure you know what to do. With all that can be seen about current conditions in the photos, my opinion is that bagging clippings should be way, way down on the to do list. I understand your to do list is what they ask you to do. I have worked on many fields that looked that way when I arrived. The links the others provided look great, I am going to check them out. For baseball fields, youre dealing with 1/4 of the area of a circle whose radius is an average of the distance from home plate to the outfield fence, plus two rectangles for the aprons in the area between the foul lines and the fence on each side. example: .25 x (3.14 x ((home plate to fence average distance) x (home plate to fence average distance)) + width of 3rd base apron x distance to left field foul pole + width of 1st base apron x distance to right field foul pole [technically, one of the two rectangles is larger than the other even if the width matches, otherwise part of the backstop area does not get figured in] - area of infield dirt This gives you total square footage of grass inside the fence. All meant to agree with what others here have said. Here, Little League size amounts to about 30 M in grass, Instructional is about 12 M, Softball is around 35 M, Pony about 40, and Babe Ruth with huge aprons is about 90-95. One park I spend a lot of time in has 6 fields. 5.5 acres (240 M) in grass inside the fences from 1 instructional, 2 Little League, 1 softball, 1 pony, 1 Babe Ruth. On a full-size field with grass infield, you can count on about 12M as the area of the skinned infield surface, including base paths, mound, and batters circle. Soon, if things go well, you will need to know how much material you need in order to add 1/2" to the infield dirt. You are going to see more of the fields than many who use them, so make sure you 1.) enjoy it and 2.) can see results for yourself, for your own satisafaction, from week to week.