Brock Purdy led the San Francisco 49ers to a win over the Seattle Seahawks on Thursday night despite playing with an oblique/ribs injury that left his status up in the air until hours before kickoff.

Kyle Shanahan said after the game that he wasn't sure if Purdy would be able to make it through the whole game even if he started.

"He's definitely the most poised rookie I've ever had. He's been like that since he's gotten here," Shanahan said.

"He was poised all week, even with him being unsure of whether he'd be able to go or not. ... And under the circumstances, we didn't have any other choices, we were going to see how long he could last, and we were ready to go with [backup] Josh [Johnson]. But he just got comfortable, he got better as the game went, and it was pretty unbelievable."