In case you missed it, Eddie Guardado has a strained right hamstring and is on hold for his next scheduled appearance. I heard someone today say that he’s the most important guy on the staff, because if he’s out, who’s going to close games? I say, by far, that Joel Piniero is more important to the pitching staff right now. Bullpen, schmullpen. Closer, schmoser. If the M’s are to contend, they need Piniero to step up this year.