Pittsburgh Pirates release former Toronto Blue Jays reliever ahead of series finale

That was the expected outcome after Pittsburgh designated the southpaw for assignment on Friday.

Borucki has more than five years of service time and had the right to refuse a minor league assignment, making the release a formality.

The Pirates will remain on the hook for the rest of his $1.15MM salary, while a signing team would pay him the prorated $760K league minimum rate if he gets an MLB opportunity.

If he does sign somewhere, it'd likely come before the beginning of September. Players need to be in an organization by September 1 to be eligible for postseason play.

They don't need to be on the 40-man roster by that point, so Borucki would be playoff eligible even if he signs a minor league contract within the next two weeks.

The 31-year-old would be a long shot to make a postseason roster but should get attention from teams seeking left-handed relief depth.

While he has struggled to a 5.28 earned run average through 30 2/3 innings, his underlying marks are a little more intriguing.

Borucki has kept the ball on the ground at a huge 55% clip while posting slightly worse than average strikeout and walk marks.

Borucki recently returned from a six-week absence due to a lower back injury. He reeled off five straight scoreless outings upon coming off the IL, but he gave up three runs in an inning of work in Milwaukee last week.

The Pirates designated him for assignment after that, calling up lefty Evan Sisk to take his spot in the bullpen.

Sisk is a 28-year-old rookie reliever, so the ceiling isn't exactly high, but the Pirates liked him enough to acquire him from Kansas City in the Bailey Falter deadline deal.

It's understandable they'd rather take a look at Sisk for the final six weeks of the season than continue pitching Borucki, who was headed for free agency at season's end.