Mazzaro, 28, threw 12 frames earlier in the year for the Marlins, allowing five earned runs. Though that was good for a solid 3.75 ERA, he allowed 15 hits and six walks while retiring just six batters via strikeout. After being designated and outrighted by Miami, Mazzaro elected free agency.
Over parts of seven seasons in the big leagues, Mazzaro owns a 4.66 ERA while averaging 5.5 K/9 against 3.7 BB/9. His best season came in 2013 with the Pirates, when he put up 73 2/3 frames of 2.81 ERA pitching.