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Marcos Mateo Injury: Cubs Pitcher Had Tommy John Surgery On Friday

Chicago Cubs relief pitcher Marcos Mateo underwent Tommy John surgery on his right elbow on Friday, as Carrie Muskat of MLB.com reports. The 28-year-old never played in a live game yet this year, last appearing in the big leagues last season with Chicago.

Over 23 appearances with the Cubs in 2011, Mateo posted a 4.30 ERA with 25 strikeouts and 10 walks over 23 innings of work. According to FanGraphs, his fastball averages just a tad under 94 miles per hour, giving him prototypical velocity for a reliever.

Mateo likely would've been given opportunities to contribute this season given the ineptitude of the Cubs' bullpen, but now he's going to miss a key chance to break out in the big leagues. Given the severity of the injury, Mateo likely won't return until early next season.

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