Minnesota Twins reliever Sam Dyson was supposed to bolster a bullpen that had struggled to establish any inconsistency in the first half of the 2019 MLB season.

However, Dyson's season is in jeopardy as he experienced a setback during his rehab from bicep soreness in his throwing arm:

Dyson had to end a preliminary throwing session yesterday after feeling more discomfort, and he will now meet with Dr. Neal ElAttrache –a reputable orthopedic surgeon–to determine next steps:

The Twins acquired Dyson from the San Francisco Giants at the July 31 deadline after Dyson posted a 2.47 ERA and 0.902 WHIP in 51 innings of work as the setup man in the Bay Area.

However, Dyson got off to a woeful start in Minnesota. In 12 appearances, Dyson had a 7.15 ERA and 4.8 BB/9 (he had a 1.2 BB/9 with the Giants) in 11 1/3 innings while also giving up three homers.

That said, the numbers do not tell the whole story. Dyson gave up six earned runs and recorded just two outs in his first two games, but he that is when he first went on IL with bicep tendinitis.

Dyson returned in the middle of August, and he showed glimpses of the pitcher that dominated in San Francisco. Between Aug. 13 and Sept. 3, Dyson posted a 2.53 ERA and a ground ball rate over 50 percent in just over 10 innings of work.

However, the continued discomfort in his right arm landed Dyson back on the IL, and now the Twins may have to face the reality that they will be without him for the postseason.