Seahawks cornerback Richard Sherman's season is over after rupturing his Achilles tendon.

The diagnosis from team doctors was relayed to reporters by head coach Pete Carroll after Seattle's 22-16 win over the Arizona Cardinals Thursday.

"There's no coming back from that until you get surgery," Carroll said.

Sherman confirmed the worst a few minutes later, saying the Achilles had been bothering him all season.

"It's one of them things that you just have to play through it as long as you can and when it goes, it goes," Sherman said.

Sherman went down with 5:20 left in the third quarter against the Arizona Cardinals Thursday night, holding his right ankle. It happened after he tackled Cardinals receiver, John Brown.

Sherman stayed down for about a minute, then limped noticeably to the sideline and did not return.

On the sideline, it appeared he told teammates, "Tore my Achilles" and "It's torn." It also appeared he told quarterback Russell Wilson, "I'm out for the year."

Sherman said he'd been playing through the injury this season to help his team.

"If it was anything I could play with, I'd be out there," Sherman said.

When asked if he thought playing on three days rest after playing last Sunday, Sherman said, "Alot of stress on it but I think it would have gone eventually anyway, but it definitely didn't help."

Sherman has been vocal in the past with his criticism of Thursday night games. He's accused the NFL of hypocrisy in claiming it cares about player safety, but then makes players compete on three days rest. He wrote an op-ed in The Players' Tribune last December, calling it a "Poopfest."

"Thursday Night Football is just another example of the NFL’s hypocrisy: The league will continue a practice that diminishes the on-field product and endangers its players, but as long as the dollars keep rolling in, it couldn’t care less," Sherman wrote.

But at the end of his press conference Thursday, Sherman had a different tone as he fought back tears.

"You just got to stay positive. That's all you can do," Sherman said.