The Mariners placed Refsnyder (knees) on the 10-day injured list Monday, Adam Jude of The Seattle Times reports.
Refsnyder has gone 1-for-17 over his last seven games, and his poor performance at the plate may have been partially due to injuries to both of his knees. A minimum stint on the IL would have the veteran outfielder in line to return to the majors July 9, though it's unclear whether he'll be back in action before the All-Star break. Buddy Kennedy -- whom the Mariners acquired from the Giants on Sunday -- will take Refsnyder's spot on the 26-man active roster.