The Pittsburgh Pirates have made two trades today, per a team press release. They acquired Zach Stewart from the Boston Red Sox for a player to be named later. They also acquired Vin Mazzaro and Clint Robinson from Kansas City for minor league pitchers Luis Rico and Luis Santos.

Stewart was once the top prospect in the Toronto system, and has been involved in several trades over the last few years. His value has fallen, with a career 6.82 ERA in 103 innings in the majors, along with a 5.6 K/9 and a 1.9 BB/9 ratio. He should be given a chance to make the team out of Spring Training, although he does have one option remaining, so he could serve as depth out of Triple-A. He throws a fastball in the low-90s, reaching 95-96, and has a mid-80s slider which is his best pitch. He has been worki...

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