The right-hander said he hurt the finger during the previous series against Texas. The Orioles are still waiting for a definitive diagnosis on the extent of the injury. Lindstrom has a 1.29 ERA with 14 strikeouts in 13 appearances.
"It was the third or fourth outing against Texas when I felt kind of a pop or something like that. I didn't know what it was," Lindstrom said. "When your adrenaline is going like that, you usually just disregard something like that unless it's something real serious. It wasn't really affecting me. I did my normal workout routine and I woke up the next morning and it was pretty stiff. I talked to the doctor and he advised me, I should get it looked at for down the road."
The Orioles are hoping there is not significant ligament damage that might shut Lindstrom down for an extended period. Lindstrom tried to remain optimistic it's a minor injury.
"Who knows?" Lindstrom said. "It could just be a sprained knuckle. Hopefully, it's nothing big. It's something that is kind of unexpected and unfortunate."
Orioles manager Buck Showalter was also anxiously awaiting word on the prognosis.
"We got the MRI back, but finding somebody to read it might have to wait until Monday," Showalter said.