"He's motivated to play," Black said. "He wants to play sometime this year. Let's hope that the hand cooperates."
Alonso, who hasn't played since Aug. 30, has spent the last few pregame sessions taking ground balls, but he has yet to return to the batting cage. He was originally expected to miss a little more than a week, but now it appears he'll be sidelined longer than that.
In other injury news, left fielder Carlos Quentin was back in the Padres' clubhouse after undergoing successful surgery on his right knee Tuesday.
Black said Quentin, who was on crutches under doctors orders, was in very good spirits all day -- and understandably so.
"Nobody likes to have surgery," Black said. "But I think there's some clarity, and maybe Carlos' mind is at ease knowing that what was causing him the pain hopefully was taken care of."
AJ Cassavell is a reporter for MLB.com. Follow him on Twitter @ajcassavell. This story was not subject to the approval of Major League Baseball or its clubs.