WHAT YOUR DIAMONDS NEED, AND WHEN
A diamond is two surfaces meeting at an edge: grass that grows and clay that does not. The edge, the skin grade and the mound decide how it plays. What we measure, what we do each year, which machines fit.
SOUND FAMILIAR?
Games lost to rain
Water stands on the infield and the game is called, even after the storm has passed.
Bad hops
The ball jumps off the lip or a low spot and someone gets hurt.
Lips along the grass edge
A ridge of infield mix builds up where clay meets turf and nobody has time to fix it.
Fields used every day
Leagues, practices and weekend tournaments leave no time for repairs.
WHAT IS DIFFERENT ABOUT THIS FIELD
Two surfaces, one edge. The skin (the clay area) is graded, not grown; it needs daily moisture and dragging, and it migrates into the grass to form a lip. The grass needs what any sports field needs, with the infield grass cut lower than the outfield.
Geometry is regulated by the level of play: base distances, the rubber, the mound height, the arcs. A field that has "crept" over the years plays unfairly and fails inspection.
The calendar has two work windows, November to January and June to July, and tournaments fill the rest of the year. Clay work cannot be done wet; the windows are short.
WHAT WE MEASURE
| What we measure | How | What good looks like |
|---|---|---|
| Skin grade and slope | Laser survey of the skin against the design slope | About 0.5 percent slope on baseball, 0.4 on softball, within an eighth of an inch; no low spots at the base cut-outs |
| Lip height at the grass edge | String line and level along the arc, base paths and foul lines | Flush. Anything over half an inch is a lip to remove |
| Skin moisture and firmness | Moisture meter on the skin; footprint and cleat test | Firm and damp through the profile: a cleat marks it, a heel does not sink; no dust, no sheen |
| Infield mix | Lab sample of the skin, sand, silt and clay percentages | 60 to 75 percent sand with silt and clay in balance; the conditioner layer present and even |
| Mound or circle, plate and bases | Slope template, transit and tape to the level of play | Mound top 10 inches above home plate on a 90-foot diamond, rubber at the regulation distance; bases square and at distance; softball circle at infield grade with the plate flush and at the regulation distance |
| Grass areas: hardness, compaction, moisture, cover | Clegg, penetrometer and POGO on an outfield grid plus the infield grass and foul territory | Hardness between 40 and 100 at every point; most compaction readings under 300 psi; infield grass cover over 90 percent at the edges |
| Outfield drainage | Standing-water map after rain; infiltrometer at the low spots | Water gone within a few hours of a normal rain; under a quarter inch per hour infiltration means compaction or layering |
Skin slopes and mix ranges per SFMA (formerly STMA) and university extension guidance; hardness per ASTM F1702 with device and standard named. Field dimensions per the governing body for the level of play.
WHERE IT FAILS FIRST
The lip along the infield arc and the base paths. The landing area on the mound and the batter's and catcher's boxes. The base cut-outs and sliding areas. The grass edges around the infield.
WHAT WE DO ACROSS THE YEAR
| Season | What the field needs | Service |
|---|---|---|
| November to January | The main window: laser leveling of the skin, lip repair, mound and plate rebuild, reconfiguration to next season's level of play, full renovations, drainage on outfields that held water; the field assessment for the park | Infield laser leveling · Infield lip repair · Mound, plate and layout · Baseball and softball field renovation · Drainage correction · Field assessment |
| February to May | Spring season: daily skin moisture and dragging routine, mound and plate tamped and covered, edges swept after every drag; decompaction on outfields as hardness rises; fertility on plan | Field Program: Monitor · Field Program: Service · Decompaction |
| June and July | Between seasons: summer renovation of the grass areas (aeration, verticut, topdressing), laser re-grade of the skin, lip repair, mound and plate rebuild, re-sod of sliding areas and edges, full renovations | Summer renovation · Infield laser leveling · Infield lip repair · Mound, plate and layout · Baseball and softball field renovation |
| August and September | Fall ball and tournaments: event preparation and sign-off | Event and tournament preparation |
| October | Overseed the grass areas with perennial rye where the field is played through winter | Winter overseeding |
HOW WE SOLVE IT
Clay services
Infield construction and renovation, laser grading, lip removal, mounds and batter's boxes.
See more →Infield drainage
Grade and drainage correction for infields that hold water.
See more →Field reconfiguration
Grass-to-clay conversions and layout changes for baseball and softball.
See more →Field Program: Manage
Your whole field program under one contract, for leagues and complexes.
See more →EQUIPMENT THAT FITS
The skin is worked with our own tools: laser-controlled grading box, rototiller, rollers, nail and steel drags and finishing mats. The grass takes the Dennis and SISIS lines.
- Premier 30 or 36Reel mower for the infield grass and foul lines.
- Pro 34RRotary mower for outfields.
- QuadraplayOutfield brushing, raking and rolling in one pass.
- MultitinerOutfield tining.
- VariseederFor the October overseed.
- TruspredA pedestrian spreader that seeds and topdresses right to the grass edge.
World Sports is an authorized US dealer for Dennis and SISIS.
PROVEN EXPERIENCE
FloridaHillsborough County Parks
30+ infield projects and 35+ park sites across Tampa Bay since 2024, under two consecutive competitively bid contracts covering 160+ fields.
Tampa, FloridaCity of Tampa
Infields and parks through the Hillsborough County contract.
FREQUENTLY ASKED QUESTIONS
What is an infield lip and why is it dangerous?
A lip is a ridge of infield mix that builds up where the clay meets the grass, as play, raking and wind push material into the turf edge. Even a small lip can send the ball on a bad hop and trip players. We remove it by cutting back the buildup and regrading the transition.
Why does water stand on my infield after rain?
Usually because the infield has lost its grade. Raking, dragging and play move material and create low spots that hold water. We laser grade the infield back to the correct slope, adjust the mix and correct the drainage around it.
What is the difference between a baseball and a softball field?
Softball uses shorter base distances, a pitching circle instead of a mound and often an all-skinned infield. The infield mix, the layout and the maintenance change with it.
How often should an infield be renovated?
It depends on how many games and practices it hosts. Heavily used infields need lip removal and regrading more often. A yearly inspection catches grade and lip problems before they show up in play.
Can you convert a grass infield to a skinned infield?
Yes. We handle field reconfiguration, including grass-to-clay conversions, as we did at North Lakes Park.
What does laser grading to one eighth of an inch mean?
The finished infield stays within one eighth of an inch of the design grade. That gives true hops and lets water run off evenly instead of collecting in low spots.
TALK TO OUR EXPERTS
Tell us how many diamonds you run and the level of play. We will walk the skins and the edges and come back with a plan for the window.
Talk to our experts →