By Gary Bennett
When the Frederick Keys kick off their 2024 season with their first home game on June 11, a steady hand will be at the tractor wheel, keeping Nymeo Field at Harry Grove Stadium in tip-top shape, as he has for years.
Head groundskeeper Mike Dunn is beginning his seventh year with the Keys. He is a 59-year-old married Army veteran with four kids and three grandchildren — and is one of the lucky ones who found his life’s calling. He is not only a master landscaper but counts himself as a big baseball fan, too.
Dunn has 27 years of professional groundskeeping experience. Before joining the Keys, he completed high-profile stints in the Sports Field Division of the Brickman Group at the Cooperstown All Star Village in New York, the Cocoa Beach Sports Field Complex in Florida and in the New York Penn League for a farm team of the Detroit Tigers.
He won the Atlantic League of Professional Baseball’s Ray Cipperly Groundskeeper of the Year Award in 2023 when he served both the Frederick Keys and Spire City Ghost Hounds during 88 home games, more than even Major League Baseball groundskeepers deal with.
The Ghost Hounds will not field a team in 2024, allowing Dunn a more manageable workload. The Keys play in the MLB Draft League and will host 40 home games from June through August. The official season kicks off June 4 with an away game against the West Virginia Black Bears. Opening day at Harry Grove Stadium is June 11 against the Trenton Thunder.
The head groundkeeper position is a full-time gig that reports directly to the Keys general manager. Dunn leads a staff of one full-time assistant and a part-time, game-day staff of eight.
A typical game day includes a fresh mowing in the morning followed by a heavy watering of the infield. In the early afternoon, Dunn and his staff set up the field for batting practice. After both teams bat, Dunn preps for the game, which includes dragging the infield, another watering, striping the batter’s boxes and changing out the bases. “Above all, we make sure the field is safe to play on,” he said. “The league insists upon that.”
The work does not stop when the team is out of town. Dunn is at the stadium every day sweating the details, whether a game is scheduled or not. “We cut the grass every day and drag the infield three times a day to move the conditioner around evenly to make sure it is level and there are no bad hops.”
Other responsibilities include edging the infield, spraying for weeds and pests, and completing any repairs to the mound or home plate area as needed. The height and slope of the playing mound and bullpen mounds must be precise. At home plate, Dunn makes sure the batter’s boxes and catcher’s box are level. He also edges the warning track and adds material to the soil as needed.
After the season ends in the fall, Dunn prepares the field for the threat of winter snow. “We do a spray application in November to combat against snow mold,” he said. “The application protects the grass if we get a lot of snow and it sits on the grass for too long. Snow mold disease is very bad for the grass.”
In late February or early March, Dunn begins his preparations for summer baseball. “We concentrate on getting the grass healthy by over-seeding, fertilizing, watering, aerating and top dressing with sand.”
Once the season begins, the Keys have lots of on-field promotions that put stress on the field but nothing that Dunn hasn’t overcome before.
“We have dogs on the field occasionally,” he said. “It can be a problem because dog urine can kill the grass. The Candy Drop and kids running the bases are no problem. Fireworks can be challenging. We always hope the wind is blowing out so the fireworks don’t land on the field. If they do, they need to be picked up quickly, and that can be a long process.”
Dunn’s advice for anyone wishing to get into baseball field management?
“Take pride in the work you do, enjoy what you do, and always have the field looking good and safe for the players. You must want to do this and be willing to put in long hours in all kinds of weather.”
Gary Bennett is a longtime Frederick resident who spends his time hiking, biking, volunteering and providing childcare for grandchildren. He is married and retired from his career as a nonprofit marketing executive.