The Pirates have placed left-handed setup man Tony Watson on paternity leave and right-handed reliever Arquimedes Caminero on the disabled list with a strained left oblique. They've been replaced by righty Rob Scahill and lefty Kyle Lobstein.
Watson will probably be absent only briefly, which is good because he seemed to be recovering from a rough start to his season and had been one of the team's trio of non-disastrous relievers, along with Mark Melancon and Neftali Feliz. I say "seemed" because the advanced stats don't entirely agree. Watson's ERA is now 2.18, but he's benefiting from an unsustainable .154 BABIP, which explains his xFIP of 4.39 and fWAR of -0.2.
Caminero, as some people following the team may have noticed, has been awful. He has an xFIP of 5.94, a BB/9 of 6.75, and a HR/9 of 1.56. Because he has no options, and because he was throwing in the upper-90s during his extremely shaky outing last night, the DL move is . . . uh . . . interesting. The Pirates will now be able to send him to AAA on a rehab assignment.
Lobstein has spent most of the season in the Pirates' bullpen. He's had a few good long relief outings, but overall hasn't been impressive, with a 4.52 xFIP. He made just one, four-inning start after being sent to AAA, and is now back.
Scahill has split his season between the Pirates and AAA. He was also unimpressive with the Pirates, posting an ERA of 6.00, albeit with a somewhat better xFIP of 4.19. In AAA, he's allowed ten hits and two walks, with ten strikeouts, in 9.1 IP.