A day after Rich Harden declared himself ready to pitch in the big leagues for the first time since leaving an April 21 start with a strained back muscle, A's manager Ken Macha hedged only slightly when asked if Harden was still slated to return to the rotation Sunday against the Twins. "We'll probably have a decision on that for you tomorrow," Macha said Thursday before the opener of a four-game series against Minnesota at McAfee Coliseum. "In all likelihood, he'll probably pitch on Sunday."