Weaver has started six games for the Dodgers this season, going 2-1 with a 3.08 ERA. His most recent start came in San Francisco on Aug. 12, when he threw three scoreless innings in what was a bullpen day for the Dodgers.
Torre said one of the reasons he decided to go with Weaver was because of how the right-hander matched up with the Cubs' lineup.
"A lot of their power guys are right-handed," Torre said. "Weaver right now for option-wise seemed like it made the most sense. He's had some experience against them."
The Dodgers also seemed to have penciled in Charlie Haeger for Saturday's start against the Cubs. The knuckleballer threw seven innings against the Cardinals on Monday and gave up three runs on five hits.
The Dodgers were hopeful that Kuroda could have pitched this weekend, but that appears to be unlikely.
"I think it's pretty safe to assume [that Haeger will start again]," Torre said. "When we were talking about Kuroda, we knew he wasn't going to be Thursday, but we were looking maybe later on in the homestand. That's less likely."
On Tuesday, a local neurologist who specializes in concussions examined and tested Kuroda for about two to three hours.
Dodgers head athletic trainer Stan Conte, who accompanied Kuroda, said all of Kuroda's tests came back normal.
Kuroda also had another CT scan (for precautionary reasons) that came back negative.
But that isn't to say Kuroda still isn't feeling the effects from the line drive that him in the head Saturday.
"He still has a little bit of a headache now and again," Conte said. "He has about the same kind of symptoms as he had yesterday -- definitely not any worse but not a whole lot better. This is really going to be a day-to-day thing."
Conte told Kuroda to spend the rest of Tuesday at home, but he hopes Kuroda will be able to make it to the ballpark Wednesday. Conte said Kuroda needed to show that his brain could handle all of the stimulation associated with a Major League game.
And now that it seems Kuroda won't make an appearance during the current seven-game homestand, the Dodgers could possibly place him on the disabled list.
Torre said the Dodgers haven't officially decided if they will put Kuroda on the DL but did hint that it could be a possibility.
David Ely is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.