Mar 13, 2006 9:24 PM EST

The White Sox have five horses in their starting rotation, and it looks like they?ll need all of them to run as long as possible this season.

Still trying to replace left-handed relief pitcher Damaso Marte, who was traded to the Pittsburgh Pirates, the Sox? bullpen appears to have another vacancy after right-hander Dustin Hermanson left Sunday?s Cactus League game with a sore back.

?There is discomfort and instability,?? White Sox trainer Herm Schneider said. ?We?ll begin aggressive treatment (today).??

Via Daily Herald