The Padres recalled Giolito from Double-A San Antonio to start Sunday's game against the Mariners.
After making four starts in the minor leagues, Giolito is ready to make his 2026 major-league debut. The right-hander built up to 74 pitches over six innings during his last outing with San Antonio, so he shouldn't have significant workload limitations in his first outing for San Diego. Giolito posted a 3.41 ERA, 1.29 WHIP and 121:56 K:BB across 145 innings with the Red Sox last season, but he was unable to land a contract for 2026 until signing with the Friars in late April.