Sterner will see a knee specialist at Stanford this week, per MLB.com.
Sterner, who landed on the injured list July 18 due to right knee chondromalacia, recently felt increased soreness when throwing, prompting a visit with a specialist. A more formal timeline for his return should emerge following the right-hander's appointment. Prior to hitting the shelf, Sterner posted a 6.12 ERA, 1.38 WHIP and 40:13 K:BB across 42.2 innings of relief work.