The Pittsburgh Pirates have been connected to a lot of relief pitchers so far this trade season. The latest news comes from Jon Morosi, who says they've been scouting the bullpen of the Arizona Diamondbacks.

https://twitter.com/jonmorosi/status/491997630499536896

Morosi mentions Oliver Perez, although I'm not sure if that's because the Pirates might be scouting him, or because he used to be a Pirate. Perez has a 1.96 ERA in 36.2 innings this year, with a 10.1 K/9 and a 3.2 BB/9. His 3.44 xFIP suggests some regression, but that he will be a good reliever going forward.

Jon Heyman wrote recently about how Arizona could be sellers, but won't have a fire sale. They've already traded Brandon McCarthy and Joe Thatcher, but Heyman says that they don't seem eager to deal veterans like Mar...

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