Silseth is scheduled to start Thursday's game against the Orioles in Baltimore.
He'll be making his second straight turn through the rotation after he struck out six over 4.1 innings while allowing three earned runs in a no-decision against the White Sox on June 28 following his call-up from Double-A Rocket City. Over five starts with the big club this season, the 22-year-old right-hander has gone 1-2 with a 5.23 ERA, 1.40 WHIP and 17:7 K:BB across 20.2 innings.