The Cubs announced that they’ve claimed left-hander Randy Rosario off waivers from the Twins. Chicago’s 40-man roster count now sits at 33 players.
The 23-year-old Rosario was rocked in his big league debut with the Twins this past season (eight runs in 2 1/3 innings) but has been considered among the team’s 20 to 30 best prospects in recent years. A hard-throwing lefty out of the Dominican Republic, Rosario’s performance has deteriorated as he’s ascended through Minnesota’s minor league ranks. This past season, he tossed 57 1/3 innings with a 4.08 ERA and 7.1 K/9 against 3.6 BB/9 with a 50.9 percent ground-ball rate in Double-A.
To Rosario’s credit, he was dominant at the Double-A level through the season’s first half. However, he collapsed in significant fashion from late July through season’s end, yielding 19 earned runs on 31 hits with a 13-to-11 K/BB ratio in his final 17 2/3 frames at the Double-A level.