Haggerty was scratched from the lineup for Sunday's game against the Athletics with a lingering left shoulder injury, Sonja Chen of MLB.com reports.
Manager Scott Servais said Haggerty recently aggravated the injury on a slide. According to Ryan Divish of The Seattle Times, the shoulder bothers Haggerty only when he swings a bat, so he's expected to be available off the bench Sunday as a pinch-hitting option or as a late-inning defensive replacement. Adam Frazier, who had been scheduled to get the day off, will enter the starting nine in Haggerty's stead.