The White Sox scratched Montgomery from the lineup for Sunday's game against the Rays.
The team has yet to provide word whether Montgomery's removal from the lineup was the result of an injury or illness. The rookie may simply be getting a day off, as he's started in every game dating back to July 8 and has gone 1-for-15 with a 1:5 BB:K over his last four contests. Everson Pereira will fill in for Montgomery in right field and will bat eighth.