Mayo left Friday's Double-A Bowie game due to back spasms, Andy Kostka of The Baltimore Sun reports.

EDGE Analysis

Mayo had only just joined Bowie on Monday, having hit .250/.326/.479 with 13 homers in 63 games for High-A Aberdeen to open the year. Whether or not his back issue represents anything more than a minor setback for the 20-year-old remains to be seen.