SEATTLE, Wash.—  Injuries mounted up for key players in the Seattle Seahawks' 34-31 loss to the Arizona Cardinals at CenturyLink Field Saturday afternoon.

The toughest was to second-year wide receiver Tyler Lockett, who left the game with a leg injury in the second quarter after getting caught from behind on a 28-yard reception. Lockett remained on the ground after the fall and was eventually carted off the field.

"Tyler got hurt today and I don't know the extent of the injury other than he is going to have to have surgery," Carroll said in his postgame press conference. "Our thoughts are with him."

When asked if Lockett will miss the remainder of the season, Carroll responded "yes."

"Pretty difficult," wide receiver Doug Baldwin said of witnessing Lockett's injury on the field. "Obviously Tyler being so close to the rest of us in the receivers room, and knowing how hard he works and how dedicated he is to his teammates ... and to see him go down with the injury that he did is pretty devastating.

"All of us were heartbroken for him over there and he was consoling us," Baldwin said of the scene. "That speaks volumes about his faith and his resolve and the manner in which he goes about handling obstacles. This is just another obstacle for him, and I have no doubt he's going to come back from this stronger physically, mentally and spiritually."

Added quarterback Russell Wilson: "It was a tough game, that's for sure. Tyler's such a special player, such a special person and means so much to our football team.

"I know if anybody is strong, it's him," Wilson said. "(He's) as tough as can be."

"We're praying for him," Seahawks cornerback Richard Sherman said. "It goes beyond the game. He's a good person, a good kid. So you just hope it's quick healing and he'll be all right."

Paul Richardson stepped up in relief for Lockett and caught four catches for 42 yards against the Cardinals, including a five-yard touchdown with roughly a minute to go that tied the game at 31. The third-year pro Richardson is prepared to fill in for Lockett in the Seahawks receiving core next to Baldwin and Jermaine Kearse.

"Yeah, I don't want us to take anything off because Tyler isn't going to be there physically," Richardson said. "So I've got to make sure I'm ready, like I was when I played my rookie year. I'm ready, I know these guys trust me, and I'm going to continue to make plays, help out.

"It's an opportunity for everybody to step up," Richardson added. "Everybody needs to step up, everybody needs to continue to make plays, everybody's got to be consistent and be able to be counted on, and I know that's what he wants from us."

Seahawks running back Thomas Rawls was the only other offensive player to leave the game due to injury.

"(He) bruised his shoulder," Carroll said. "At least that's what we know right now."

Two defensive starters in safety Kam Chancellor (ankle) and Ahtyba Rubin (wrist) left the game momentarily, but each player returned to the field shortly thereafter.

"His ankle got jammed a little bit and he was able to come back," Carroll said of Chancellor's injury. In the locker room after the game, Chancellor said the ankle is "doing good."