A white No. 43 White Sox jersey hung from the bullpen fence Saturday night at Guaranteed Rate Field.

Visible to much of the ballpark, Danny Farquhar’s uniform served as a striking reminder that the relief pitchers seated behind it and the rest of the Sox had their minds on something bigger than baseball during a game against the Astros.

Farquhar collapsed in the dugout after throwing 15 pitches in a relief outing in Friday night’s 10-0 loss to the Astros. He suffered a brain hemorrhage caused by a ruptured aneurysm and as of Saturday afternoon was stable but in critical condition in the intensive-care unit at Rush University Medical Center under the care of Dr. Demetrius Lopes and the Rush neurosurgical team.

Sox players met with manager Rick Renteria in the afternoon to receive the latest updates before resuming their normal baseball activities to prepare for the night game. They left a quiet clubhouse to take batting practice and play catch, but players said their minds were on Farquhar.

They wrote “D.F. 43” in silver on the front left side of their black caps.

“It crushes us in this clubhouse,” pitcher James Shields said. “And nothing really matters baseball-wise when something like that happens, you know? When you see one of your brothers go down like that, it’s not very fun to watch. He’s such a resilient human being, and we’re praying for him.”

The commotion in the dugout was the first sign something was wrong Friday night.

Farquhar entered to relieve Shields with one out in the sixth inning and faced four batters, giving up a double and a home run and recording the final two outs of the inning.

Astros manager A.J. Hinch said his players saw Farquhar vomit in the dugout. Sox pitching coach Don Cooper called it “shocking” when Farquhar lost consciousness, and Renteria said he attempted to keep Farquhar from falling over until trainers and emergency medical technicians quickly surrounded Farquhar, carried him into the clubhouse and loaded him into an ambulance bound for the hospital.

The Sox said Farquhar regained consciousness Friday night, but they did not say whether he had undergone any surgical procedures since then. A Rush spokesman referred to the Sox for all updates.