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Pirates Transactions: Isaac Mattson Added to the Major League Roster

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The Pittsburgh Pirates have selected the contract of right-handed pitcher Isaac Mattson, while designating Jake Woodford for assignment on Thursday night. Woodford has previously joined the team to provide pitching depth in the form of a spot start, which he made on Wednesday.

Mattson was signed by the Pirates as a minor league free agent this past December. He started his season in the Altoona bullpen, but quickly moved up after a 3.27 ERA in 11 innings, with a 13:5 K/BB ratio. He’s continued pitching well with Indianapolis. Mattson has a 3.15 ERA in 60 innings, with a 76:33 K/BB.

He uses a four-seam/slider approach, with swing and miss capability from both. The fastball sits 94-95 MPH, touching 96-97. The slider sits mid-80s, with 30 inches of vertical break.

This is a deserved shot for Mattson. He’s previously made four appearances in the Majors in 2021 with Baltimore, putting up a 6.23 ERA. He’s taken a step forward, based on his minor league results, and should get a few looks in the Majors before the season is finished.

–Down in the minors, the Pirates transferred RHP Thomas Harrington to the Development List. Harrington made what is likely his final start of the season on Wednesday.

–Indianapolis activated RHP Fineas Del Bonta-Smith, giving them added relief depth down the stretch.

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Tim Williams
Tim Williams
Tim is the owner, producer, editor, and lead writer of PiratesProspects.com. He has been running Pirates Prospects since 2009, becoming the first new media reporter and outlet covering the Pirates at the MLB level in 2011 and 2012. His work can also be found in Baseball America, where he has been a contributor since 2014 and the Pirates' correspondent since 2019.

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