Meredith and second-year offensive lineman Jackson Powers-Johnson have alternated at first-team center. But lately, Meredith has taken the majority of starting reps at the position. On the unofficial depth chart, the Raiders have Meredith listed as the starting center while Powers-Johnson is at right guard.

While Pete Carroll and Geno Smith returning to Seattle will be the top storyline, there's plenty to watch in Thursday's Seahawks preseason opener. Here are 5 things to watch.

Former Seattle Seahawks coach Pete Carroll returns to the place he helped bring a Super Bowl when the Las Vegas Raiders visit Thursday night.