MINNEAPOLIS -- Twins third baseman Miguel Sano, out since Aug. 19 with a stress reaction in his left shin, has yet to begin baseball activities and is making slow progress with the injury, manager Paul Molitor said Tuesday.
Sano, who suffered the injury after fouling a ball off his shin on Aug. 18, didn't join the Twins on their eight-game road trip, staying back to rehab at Target Field. But he hasn't progressed to running or fielding, which means he's still not close to returning. He's eligible to be activated from the 10-day disabled list on Wednesday.
"I saw him and talked to him a little bit and it's unfortunate it's moving rather slowly," Molitor said. "You can't rush or force those kinds of things without risking something significant happening if you come back too soon. I think he is improving, but it's just a slow process right now."
Sano has been using a bone stimulator as part of his rehab, and Molitor said the team should know more about how long Sano will be out after he meets with team doctors Tuesday night. Sano declined comment before the game.
"All I've heard is they might consider some other things that might help to expedite the healing of the bone," Molitor said. "I'll get more details once the doctors come. He's been doing cardio work in the water and on the bike. Things of that nature."
• Catcher Jason Castro, on the 7-day concussion disabled list, is eligible to return on Thursday, but Molitor said he might miss a little more time beyond then. Castro has yet to resume baseball activities and has dealt with headaches since the concussion, which was caused by a foul ball to his facemask.
"Yesterday was his best day, but I don't believe he's ready yet for baseball activities," Molitor said. "The symptoms are mostly limited to headaches that pop up, which isn't a great sign. We want to make sure those are clear before we put him out there and try to do too much."
• Left-handers Hector Santiago (back strain) and Adalberto Mejia (biceps strain) are both beginning their rehab assignments with Triple-A Rochester. Santiago starts Tuesday, while Mejia starts Wednesday.
Rhett Bollinger has covered the Twins for MLB.com since 2011. Follow him on Twitter @RhettBollinger and Facebook. This story was not subject to the approval of Major League Baseball or its clubs.