Guerrero was scratched from the lineup for Sunday's Grapefruit League game against the Orioles due to a left knee contusion, Keegan Matheson of MLB.com reports.
The 24-year-old was slated to start at first base and bat second in one of Sunday's split-squad games versus Baltimore, but he'll instead receive a day off after suffering the injury Saturday. Manager John Schneider said it's a minor issue that won't require medical testing, so Guerrero could be back in action within the next few days.