Shelby Harris has played in a lot of NFL stadiums during his nine seasons prior to joining the Seahawks this offseason. The veteran defensive lineman played for a passionate fan base in Denver for the past four seasons, and in a division that also features annual trips to play in Kansas City's notoriously loud Arrowhead Stadium.

But Harris had never in those nine seasons experienced crowd noise quite like what he played in while making his Seahawks debut on Monday night.

"I have never heard a crowd that loud in my life," Harris said. "That is no diss to anybody. Denver gets loud, but I've never heard anything like that in my entire life. I literally could not hear the man next to me. I've never seen something like that before. That was phenomenal, shout out to the 12s. I have played nine years in the NFL, I have never heard anything like that before in my life."

Middle linebacker Jordyn Brooks noted that he couldn't hear the calls coming into his headset for most of the night.

"The crowd was going crazy," he said. "I couldn't hear nothing in the headset. I love that man. The fans really helped us tonight. We need that all season."

The Seahawks beat the Broncos Monday night because they got a great performance out of Geno Smith, and because the defense stepped up huge in the second half, particularly at the goal line, and for a lot of other things that took place between the lines. But the Seahawks also felt like they were able to get the job done thanks to a big assist from their fans on what was one of the most raucous nights in Lumen Field in years, a noisy night that contributed to three false start penalties for Denver, as well as two delay of game penalties.

"It was a great night," Seahawks coach Pete Carroll said. "The fans were ridiculous. The 12s were so good tonight. God dang, they were great. I'm so pleased we could give them a game like this, and that they could have so much fun… They were incredibly good. We're so lucky. We're so lucky that we get to play here, and our fans love it so much, and they perform like that on game day. It was awesome."

Safety Quandre Diggs, who has been playing in Seattle since 2019, agreed with Harris' assessment of the crowd noise.

"Definitely the loudest game I've been a part of," Diggs said. "Maybe my first year, the NFC West championship on the line (against) San Francisco. "But this one was crazy loud. The 12s really brought it tonight."

Another newcomer to the Seahawks, outside linebacker Uchenna Nwosu, used the crowd noise to his advantage, recording the game's first sack to go along with seven tackles, a pass defensed and a forced fumble.

"It was sensational, man," Nwosu said. "You hear about it all the time, but to experience it for yourself is something different. That crowd was amazing today, they were great for us, they really helped us out there. We appreciate them so much… When the crowd is that noisy, the offense has to go to a silent count, and you're kind of watching the center. Certain centers have certain motions they do, and this center was always leaning and doing different things, so I was able to get a jump on that."