Marlins demote Derek Dietrich because of his defense

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Derek Dietrich has been the Marlins’ starting second baseman since being called up from the minors in the middle of last season and he’s actually hit well this year with a .773 OPS in 41 games, but he’s been demoted back to Triple-A because the team thinks his defense is terrible.

Dietrich has seven errors, which is tied for the MLB lead among second basemen, and Manny Navarro of the Miami Herald writes that he “has had plenty of defensive struggles” even beyond the error total. Ultimate Zone Rating agrees, pegging Dietrich as 9.0 runs below average in 800 career innings at the position.

But still: 24-year-old middle infielders with a .773 OPS don’t grow on trees and Dietrich’s defensive numbers aren’t considerably worse than plenty of other regulars with good bats. He’s a former Rays second-round draft pick who was acquired by the Marlins in exchange for Yunel Escobar and certainly seems good enough to remain in their long-term plans.

Orioles claim Jace Peterson off waivers from the Yankees

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The Baltimore Orioles have claimed utilityman Jace Peterson off waivers from the Yankees.

Peterson has played in three games this season and has been DFA’d twice. He had no place to play in New York but perhaps the O’s can use his versatility. While mostly a second baseman in his career he’s appeared at every position except pitcher and catcher at some point along the way, and that’s useful. More useful for a team that isn’t going anyplace like Baltimore, I presume. Saves ’em on gas money from Norfolk when someone gets an owie.

To make room for Peterson the O’s moved Gabriel Ynoa, who is suffering from shoulder inflammation, from the 15-day to the 60-day disabled list. Ynoa has yet to appear in a game this season.