Tony Watson hasn't thrown in a game since February 28 due to what he calls "mechanical and physical issues." Watson declined to elaborate, so the severity of his physical issue isn't known. It's also a mystery when he'll pitch next. The 27-year-old had a 3.38 ERA and 53/23 K/BB ratio over 53 1/3 innings last season and was expected to be the Pirates' primary left-hander out of the bullpen in 2013.