Polanco (Achilles/wrist) will remain on a rehab assignment with Triple-A Syracuse through the weekend, Mike Puma of the New York Post reports.
The Mets previously hadn't ruled out a return for Polanco as soon as Friday in San Diego. However, the club has elected to wait to bring back the veteran infielder, likely targeting Tuesday versus the Cardinals at the start of a homestand. Polanco has been sidelined since mid-April with a right wrist contusion and left Achilles bursitis.