Pirates get Zach Stewart from Red Sox, Vin Mazzaro and Clint Robinson from Royals

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Pittsburgh made a pair of minor trades, acquiring right-hander Zach Stewart from the Red Sox for a player to be named later and getting right-hander Vin Mazzaro and first baseman Clint Robinson from the Royals for minor leaguer pitchers Luis Santos and Luis Rico.

Boston got Stewart from Chicago in the Kevin Youkilis trade, but designated him for assignment last week. He has a 6.82 ERA in 103 career innings, but Stewart has a decent track record in the minors and could emerge as a useful back-of-the-rotation starter or middle reliever.

Mazzaro is a similar story in that the Royals got him from the A’s for David DeJesus and then designated him for assignment following a 6.72 ERA in 72 innings. He doesn’t have much upside, but gives the Pirates some more pitching depth.

As a 27-year-old first baseman Robinson was never going to get a chance in Kansas City behind Billy Butler and Eric Hosmer, but he’s consistently crushed minor-league pitching  and offers 20-homer power with good strike zone control. Robinson hit .309 with a .396 on-base percentage and .493 slugging percentage in two seasons at Triple-A, so it’s nice to see the 6-foot-5, 250-pounder go somewhere he might actually get an opportunity.

Report: Pirates sign Felipe Rivero to four-year contract extension

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Ken Rosenthal of The Athletic reports that the Pirates will sign reliever Felipe Rivero to a four-year contract extension that includes two club options. The total value of the deal is believed to be $22 million and each club option is worth $10 million.

Rivero, 26, did not come to an agreement with the Pirates to avoid arbitration in his first year of eligibility ahead of last Friday’s deadline. He requested a $2.9 million salary for the 2018 season while the Pirates countered at $2.4 million. This extension will cover all four years of Rivero’s arbitration eligibility and the two club options can cover his first two years of free agency as well.

Rivero was one of baseball’s best relievers last season, finishing with 21 saves, a 1.67 ERA, and an 88/20 K/BB ratio in 75 1/3 innings. The Pirates acquired him from the Nationals along with minor leaguer Taylor Hearn ahead of the 2016 non-waiver trade deadline in the Mark Melancon deal.

Presumably, Rivero’s extension was in the works before he knew anything about the Andrew McCutchen trade. He made a couple of tweets following this afternoon’s news. In one, he used only the “facepalm” emoji. The other was a .gif of The Office character Jim Halpert yelling, “What is going on?”