Pedro Guerrero (sore neck) completed his 44th day on the disabled list Monday and reported progress, according to Dodger trainers. But on Sunday, Guerrero reportedly felt additional soreness in his neck. Fred Claire, the Dodgers' executive vice president, said Guerrero himself will determine when he is fit enough to return. But Claire, who spoke with Guerrero before Monday night's game, said he might discuss the possibility of sending Guerrero--and Alfredo Griffin (broken hand)--on a 20-day rehabilitation assignment to the club's triple-A team in Albuquerque. "Because he is not able to play under game conditions, a lot of it still comes from how Pete feels about himself," Claire said. "At the point where Pete feels ready, we'll have to decide whether he should go to Albuquerque to rehabilitate or put him back into the lineup. I've talked to Alfredo about the same thing (the rehabilitation assignment). It's a possibility." Assistant trainer Charlie Strasser on Guerrero: "Things are progressing. He's getting closer." . . . The Dodgers recalled right-hander William Brennan to pitch tonight, demoting outfielder Jose Gonzalez. Brennan was 12-5 with a 3.55 earned-run average at Albuquerque. He pitched five shutout innings, throwing 52 pitches, in his last start on Saturday, a 13-1 win over Edmonton. Brennan arrived five hours late Monday because of a canceled flight in Calgary.