Not playing was initially difficult of the 6-foot-2 backer, who wasn't used to watching games from the sidelines. "I just wanted to go out there and play," he said.
But eventually he learned to embrace the moments from the sideline and believes it'll only help mold his future at UO.
"You have to be comfortable playing, you can't be anxious, because that's when something bad happens. " Seisay said was the biggest takeaway. "You have to be calm, especially with that loud crowd, and focused."
Even with the departure of three secondary starters, Seisay understands he'll have to battle to see the field this fall.
"I'm just trying to work my way up. Hopefully I can beat out some of the players, I'm going to work hard and hopefully I can get a spot," he said.
Seisay spent his spring break working on his conditioning and believes it has proven beneficially so far in spring practice.
He's also gotten stronger in his year in Eugene and now knows most of the playbook and the responsibility he holds in each situation.
As mentioned Tuesday, the Ducks have added noticeable girth across the board. Coach Mark Helfrich says tweaks have been made to his team's strength and conditioning program this year.
"We made some changes on how we worked with our big guys in the weight room," he said. "We started spring ball a week later to have the weight training to take full effect."
Helfrich says his "box guys are noticeably bigger and stronger", and that is by design. For the rest of the team, it's all about continuing to improve explosiveness, he says.
"He decided this is what we need," said defensive coordinator Don Pellum. "We need to get bigger and stronger. I think the directive came from him and the rest of us just echoed it."
DP breaks down 'swagger'
At his press conference in January, Pellum expressed his desire for his team to play with more "swagger". Tuesday he explained what form he hopes that takes amongst his players.
"We're not talking about being idiots and bad people. We're talking about playing with some confidence and a chip. In football you've got to walk out with an attitude. We're trying to develop that and the kids are embracing it."