The AL Central-leading Twins could promote well-regarded pitching prospect Brusdar Graterol to the majors as early as this month, assistant general manager Rob Antony told SKOR North. The right-hander will likely work as a reliever this year if he does come up to the bigs, Antony suggested.

The 20-year-old Graterol has missed time this season with shoulder issues, but he’s back now and has turned in encouraging results when healthy. In his first Double-A action this year, Graterol has logged a 1.89 ERA/3.26 FIP with 8.69 K/9, 3.59 BB/9 and a 52.1 percent groundball rate across 47 2/3 innings. Moreover, Baseball America (No. 34), FanGraphs (52) and MLB.com (58) all rank Graterol among the best prospects in the game.

Capable of hitting triple digits on the radar gun, Graterol could be a serious late-season weapon (perhaps a multi-inning one, per Antony) for a Twins bullpen that hasn’t been great at preventing runs this year. The unit sits a middle-of-the-pack 14th in ERA (4.45), and it has undergone major changes of late. The Twins recently rid themselves of Blake Parker, Matt Magill, Mike Morin and Adalberto Mejia – who combined for upward of 100 innings from their bullpen – and then tried to upgrade their relief corps by adding Sergio Romo and Sam Dyson prior to the trade deadline.

Romo has thrown 4 1/3 scoreless innings of one-hit ball since Minnesota acquired him from Miami, but the Dyson pickup has surprisingly blown up in the Twins’ faces so far. After an impressive start to the season with the Giants, Dyson surrendered a total of six earned runs on six hits and two walks in 2/3 of an inning in his first two appearances as a Twin. Dyson then hit the injured list with right biceps tendinitis, which he alarmingly revealed has been bothering him since mid-July.