Seahawks opener: The Percy Harvin Factor

SEATTLE -- The Percy Harvin Factor. They're four little words, but they could mean a lot to the Seattle Seahawks this season.

After an injury-plagued season with the Seahawks last year, Percy Harvin is fully healthy for the first time since the trade that brought him over from the Minnesota Vikings last season.

We saw flashes of Harvin's brilliance in Super Bowl XLVIII. He returned the second half kickoff 87 yards for a touchdown, while also leading the Seahawks in rushing with 45 yards on just 2 carries and catching a pass for 5 yards.

The scary thing is: Harvin is finally feeling better. Earlier in camp, he said this is the best he's felt since high school, and he echoed the sentiments at practice this week.

"This is probably the healthiest I've been in a while," said Harvin. "I don't think any athlete can say they're 100-percent all the time, but I'm feeling very good right now. I'm ready to start the season."

The Seahawks love the idea of having Harvin for a full season, but it's not easy to keep him healthy. Harvin has only played all 16 games in a year one time in 5 NFL seasons. Playing for Minnesota in 2011 (his only full year in the league), Harvin caught 87 passes for 967 yards and 6 touchdowns. He also had 52 carries for 345 yards and 2 touchdowns. That same season, he also returned 16 kickoffs for 520 yards and a touchdown.

"When Percy steps on the field, he's a definite threat," said Seahawks quarterback Russell Wilson. "He can do it all. He was an MVP-type candidate before he got hurt, to be honest with you. He's back to that, and I think he can be even more than that."

The preseason gave us a glimpse of what the Seahawks can do when Harvin is healthy. He caught 7 passes for 92 yards, and he also returned a kick for 46 yards in exhibition play.

"I'm excited to be healthy again. I'm getting all the first team reps with my guys out there. Just getting the ins and outs of football that I didn't get last year, it's a tremendous honor to be healthy right now."

It's one step at a time for Harvin, though.

"The key is to stay on the field," Harvin said. "Anything I can do. I've been working with the trainers, a message therapist, so I got my whole team together to make sure I'm all good."

Harvin and the Seahawks kickoff the regular season tonight against the Green Bay Packers. Kickoff is scheduled for 5:30pm at CenturyLink Field. Follow @LewisSports, @mikeKOMOsports, and @KOMO4Sports on Twitter for all the latest from the stadium.