He’s touched every ꓘ at The K for 25 years; meet the man who gives mud baths to 200+ balls before each game  

March 19, 2024  |  Nikki Overfelt Chifalu

Every baseball that crosses home plate at Kauffman Stadium likely received a mud bath from Tom Walsh, he shared. 

Before every home game — including opening day March 28 — the Kansas City Royals clubhouse and umpire services manager is in charge of preparing 204 balls in line with the strict regulations of Major League Baseball, he said, which means rubbing each ball with a special, league-approved mud.

A rubbed, game-ready ball versus a out-of-the box ball; photo by Nikki Overfelt Chifalu, Startland News

“It helps with the slickness,” noted Walsh, who has worked for the Royals organization in some capacity for 42 seasons. “That averages out to 16,524 balls for the year.”

Lena Blackburne Rubbing Mud — “baseball’s magic mud” — has been taking the sheen off new baseballs since 1939, according to the family-run company.

“It’s a mud from New Jersey,” Walsh said. “No one knows its location. It’s a secret location.”

Rawlings — the company that makes the baseballs — has tried multiple times (and failed) to make a ball that doesn’t require a mud bath.

“You might as well stay with history and use what works,” Walsh noted. “They’re always trying to modernize things now.”

Lena Blackburne Rubbing Mud in the ball room of the Royals clubhouse; photo by Nikki Overfelt Chifalu, Startland News

The rubbing mud — which the company describes as “resembling a cross between chocolate pudding and whipped cold cream” — is different from normal mud because of the way it sticks to the ball and provides a better grip, Walsh explained.

“Pitchers like them dark, but the hitters don’t,” he continued. “‘They’re saying I can’t see them; they’re too dark.’ So you’re trying to keep both sides happy. But now MLB is involved and they say, ‘This is how we want it.’”

Click here to learn more about the history of the Lena Blackburne Mud from CBS.

The league-approved mud is just one of many guidelines Walsh must follow to get the baseballs prepped for a game, he said. It all starts with how the baseballs are stored in the clubhouse.

“We have a humidor back there, which we just installed a few years ago,” Walsh explained. “So they want the room kept at a certain temperature in the humidity.”

MLB game ball tracking forms; photo by Nikki Overfelt Chifalu, Startland News

According to MLB, the game balls must be stored at 70 degrees and 57 percent humidity for at least 14 days before they are used.

“There’s a sheet we fill out each day,” he added.

When a shipment of baseballs is received, Walsh said, he puts a date and number on the box, then an “R” once they have been rubbed. But the 17 dozen game balls can’t be rubbed until the day of the game. Once he’s done, a local league representative inspects the balls and sends photos to MLB for approval. It’s only once they’ve been approved that the balls are placed in the big, black MLB bag and taken to the umpires.

“Basically, I’m on a pass/fail thing every day,” Walsh explained. “I’ve been lucky they’ve been passed every time.”

A poster shows the gradients of rubbed game balls; photo by Nikki Overfelt Chifalu, Startland News

Any baseballs that aren’t used during the game, he noted, aren’t allowed to be used for the next game. He sends the extras on the road with the team and to the bullpen bags.

“So they don’t go to waste,” Walsh added.

After 25 seasons of working in the Royals clubhouse and rubbing countless game balls with mud, Walsh — who has his own bobblehead in the Royals Hall of Fame — hasn’t tired of the task, unknown to many outside the sport.

“I don’t mind doing it,” he noted. “Everybody’s got their day-to-day duties. It’s just like any other job.”

Walsh —  who worked as a team manager/equipment manager while a student for the University of Kansas baseball team under the late Marty Pattin, a former Royals player — started working for the Royals during the 1981 season in the maintenance department while still a student at KU.

In 1987, he became the visiting clubhouse assistant, then moving to the Royals clubhouse in 1998. He counts the World Series wins in 1985 and 2015 at the top of his favorite moments list.

“I wanted to work in sports,” he said. “I was pretty lucky to get an opportunity to work here.”

Tagged , ,
Featured Business
    Featured Founder
      [adinserter block="4"]

      2024 Startups to Watch

        stats here

        Related Posts on Startland News

        Meta’s billion-dollar KC data center just came online; here’s what the region expects it to generate

        By Tommy Felts | August 21, 2025

        As Meta officially flipped the switch this week on its Kansas City Data Center — making the $1 billion project part of the company’s global infrastructure — the move positions the metro as a hub for cutting-edge tech, said Quinton Lucas. “Meta’s investment in Kansas City is a clear signal that our city is a…

        Bean around the block: How this Westport coffee shop is cherry picking roasts from its own farm in the Andes

        By Tommy Felts | August 21, 2025

        A hemisphere away from Brett Janssen’s former job at General Motors in Kansas City’s Northland, the now-budding Westport coffee shop owner found a fresh batch of opportunities: his wife, business partner and a transcontinental farm-to-cup Columbian coffee operation. Janssen’s House Coffee — the fruit of Janssen and his fiancée Genisis Mejia’s passion for coffee —…

        Attic with global ambitions: Luxury brand builds from humble origins to Material Opulence

        By Tommy Felts | August 19, 2025

        Renauld Shelton II sees power stitched into the seams of fashion, the Kansas City designer said, detailing the dynamic pairing of apparel and pride that grounds his luxury clothing brand. “It’s a confidence builder. When you look good, you feel good,” said Shelton, founder and CEO of Material Opulence. “It sets you up for success.”…

        Startup Crawl returns Sept. 19, marking Startland’s 10-year anniversary with KC innovation focus

        By Tommy Felts | August 19, 2025

        Kansas City’s largest startup open house is back this fall — celebrating a decade of innovation alongside emerging builders and newsmakers. Set for Sept.19 and organized by Startland News, Startup Crawl will mark the newsroom’s 10-year anniversary with a high-energy showcase of the city’s entrepreneurial community. The event, presented by the Ewing Marion Kauffman Foundation,…