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Robinson Cano is less than impressed with teammate Joba Chamberlain.
This development is quite ironic for the New York Yankees considering that stellar bullpen work kept them competitive through the first four months of 2013.
At this point, however, even Mariano Rivera cannot be wholly trusted. The MLB immortal is limping toward retirement with five blown saves since in his past 11 opportunities. That's largely because he's surrendering home runs at an uncharacteristically high rate (four homers allowed in past 16 innings pitched).
Optimists who suggested that Joba Chamberlain would improve in his second season back from Tommy John surgery were proven false on Opening Day. A 4.54 earned run average from the right-hander probably understates his mediocrity. Instead, consider that he has allowed one or more baserunners in 17 of his past 21 appearances, issuing 13 walks in that span against only 14 strikeouts.
Boone Logan had already been slumping since the All-Star break (2.16 ERA, 12.6 K/9 before, 5.27 ERA, 9.2 K/9 after). Like most prominent Yankees this season, he's now fallen victim to injury, specifically soreness in his biceps.
Logan received a cortisone shot, according to Andy McCullough of the Star-Ledger, which will keep him sidelined throughout a pivotal upcoming series versus the Baltimore Orioles. Eighth-inning man David Robertson will also receive several days off to mend his ailing shoulder.
On top of that, strikeout artist Shawn Kelley is struggling of late due to a dependency on fly balls, while rookie Preston Claiborne owns an astronomical 6.55 ERA and .847 OPS against since the start of July.