Swanson (elbow) is slated to make one more rehab appearance with High-A Everett before rejoining the Mariners, Daniel Kramer of MLB.com reports.

EDGE Analysis

Swanson was impressive while firing a scoreless second inning Saturday against High-A Eugene, and the Mariners will apparently afford him a second tune-up opportunity. Assuming all goes off without a hitch in that upcoming appearance, Swanson is slated for activation before the start of an upcoming homestand Friday against the Red Sox.