Ober was placed on the 10-day injured list Tuesday, ending his 2021 season, Brandon Warne of Access Twins reports.
Ober lined up for one final start of the season this week, but his rookie campaign will instead come to an unceremonious end due to the hip issue. The 26-year-old had a strong showing in his first taste of the majors with a 4.19 ERA, 1.20 WHIP and 96:19 K:BB across 92.1 innings (20 starts). He'll have more than four months to get healthy before the start of spring training, where he should have an inside track to a rotation spot for 2022.