PHOENIX -- Brandon Webb threw another bullpen session Wednesday, but there is still no timetable for his return to action.
"I don't think he could honestly give you a date," interim manager Kirk Gibson said. "I know I can't."
Gibson recalled some of the injuries that he had gone through in his career and said he understood where Webb was at right now from a mental standpoint.
"He's probably in a frustrating stage right now, because mentally, he's ready," Gibson said. "He wants to pitch. It gets frustrating. I think he's frustrated with it. He's certainly frustrated with you guys anxiously asking him all the time. I don't think he really has any answers."
On Wednesday, Webb played long toss, threw some pitches off the mound and then played long toss again.
"He's making progress," Gibson said. "He's got a ways to go. It's coming slow."
When asked if he thought Webb could possibly pitch again before the end of the season, Gibson said. "It's a possibility, yeah."
Webb made just one start in 2009 and had minor shoulder surgery in August.