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Mets pitching prospect Jack Leathersich promoted to Triple-A

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The 2011 fifth-round pick is headed to Las Vegas after a dominating run in the Eastern League.

Earlier this week, Mets GM Sandy Alderson expressed interest in seeing Jack Leathersich in the majors at some point this season, but he was concerned about the lefty reliever's walk totals at Double-A Binghamton.

Leathersich has dominated opposing hitters — he's struck out 55 batters in 29.1 innings this season — with a fastball that tops out at 94 MPH, but he's also surrendered 4.91 walks per nine innings. In his last 10.2 innings pitched, Leathersich's ratios are a little more impressive. He's racked up 21 strikeouts and four walks during that span while allowing just a single run.

Now Leathersich is going to be tested at Las Vegas, which, if you haven't heard, is not an easy place for pitchers to succeed. With all the trouble the Mets have had finding a reliable left-handed reliever not named Scott Rice, it's easy to picture Leathersich making his MLB debut this season, but it's also hard to ignore the Josh Edgin comparisons.

Edgin blitzed through the minor league system at a similar pace to Leathersich's, but has yet to find consistency in the majors. It's true that Leathersich's minor league strikeout rates are more impressive than Edgin's were, but his walk rate doesn't look like it will play in the majors unless he finds a way to better command the strike zone.

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