Polanco is out of the lineup for Game 1 of Sunday's doubleheader against the Rockies, Shannon Drayer of Seattle Sports 710 AM reports.
It's the first time out of the lineup this season for Polanco, who is 0-for-10 with four walks and three strikeouts over his past three games. Dylan Moore is starting at the keystone, with Polanco likely to rejoin the starting nine for Game 2.