Sean Marshall is up from Iowa and will move into the rotation, swapping roster spots with Neil Cotts. Angel Guzman takes Cotts' place in the bullpen, apparently to be groomed as a closer, says Paul Sullivan.

Dempster is now supposed to mentor Angel Guzman to take over his role, even though Guzman has never been a closer, is not ready to pitch in back-to-back games and has been winless in 13 career starts, an indication he's still learning his trade at the major-league level.

We shall see...

Game in a couple hours: Hill vs. Peavy in San Diego.