Kenneth Walker leads the Seahawks to victory in his “Flu Game.”

The Seahawks placed running back Kenneth Walker III on the injured list Saturday because of an illness. He played on Sunday despite being questionable, but Walker was under the weather.

“Yes, he was sick todayMan,” Seahawks quarterback Geno Smith said, via Brady Henderson of ESPN. “Two touchdowns on his birthday, that was sick.”

Battling flu-like symptoms, Walker gained 93 yards and scored two touchdowns on 16 touchdowns. It came on his birthday, no less. Walker said afterward that he was tired but praised the training staff for keeping him hydrated.

“I felt like everything was just kind of hard, being sick and everything,” Walker said. “But we have the synchronization, so everything is good.”

Walker ran out of energy to celebrate after his 20-yard touchdown in the second quarter. His second touchdown was a 17-yard reception from Smith.

“I thought he did a great job,” Smith said. “Obviously he was under the weather. Today on his birthday, a little insight into his flu season. I think that’s spectacular. It might be the first time this has happened, but he’s a guy we can rely on. I know he didn’t feel as good as he fought and fought, but to come out and do what he did on his birthday, I thought it was great.”