"I don't know [where the baseball is]," Cuthbert said. "Hopefully, I can get it soon.
"If I find it, I'll give it to my mom."
Cuthbert impressed the Royals and manager Ned Yost earlier this season during a callup, and once again drew Yost's praises on Wednesday.
Cuthbert also had a two-run single off Detroit starter Randy Wolf in the second inning, and he made two fine defensive plays at third base.