WILMINGTON, Del. — The only human in the vicinity wearing Kansas City Royals colors from head to toe opens his notebook and begins writing. He’s taking notes from the top dugout step here at Daniel S. Frawley Stadium, the ballpark in Wilmington nestled next to an interstate highway, much like Kansas City’s Kauffman Stadium. The outfield — 400 feet to the center-field wall and 325-plus feet to the corners — is also similar to Kansas City’s ballpark.



But in many ways, Frawley differs vastly from Kauffman.



The highway beyond the outfield fence is much closer. You can hear every car that passes, every semi truck that blows its horn. You can also feel a cool breeze coming off nearby Christina River. This wind typically blows in, toward the faces of hitters standing at home plate or at the top of the home dugout, where, on this particular Tuesday, the man wearing Royals colors can feel it in his face.



It’s 5 p.m., and the...