Twins acquired RHPs Sam Armstrong and Ryan Gallagher from the Cubs for INF/OF Willi Castro.

The 24-year-old right-hander has spent the entire season at Double-A Knoxville, posting a 4.62 ERA, 1.26 WHIP and a 72/31 K/BB ratio over 89 2/3 innings through his first 19 appearances (18 starts). He’ll add rotation depth in the upper minors for the Twins.