RENTON, Wash. -- The Seattle Seahawks cut 15 players, trimming their roster to the NFL-mandated 75 players. Here's a closer look at the first cuts:

Most significant move: Waiving Patrick Lewis. When the Seahawks' offense took off in the second half of last year and averaged 31.25 points per game, Lewis was the starting center. Now he's off the team. The coaches like what they've seen from Justin Britt, who is making the move to center from left guard, but Lewis would have provided a nice insurance policy. Instead, the Seahawks appear to be going with rookie Joey Hunt, who is a less expensive option.

Searching for WR depth: Kevin Smith had a chance to compete for the fifth wide receiver job, but he has been dealing with a hamstring injury and was waived. The competition to sneak onto the roster at wide receiver is open, with guys like Tanner McEvoy, Antwan Goodley, Kenny Lawler and Kasen Williams looking to make the cut. This is an area to keep an eye on as other teams trim down to 53 players this weekend. The Seahawks could look to add a wide receiver who's currently on another team's roster.

Rookie watch: Running back Zac Brooks was the first member of the Seahawks' 2016 draft class to get cut. Brooks, a seventh-round pick, battled through a hamstring injury for much of training camp. It didn't help his cause either that the Seahawks drafted two running backs ahead of him. But overall, this could be a rookie-heavy roster. It'd be no surprise if as many as 13 first-year players made the team.

Browner experiment fails: The Seahawks were hoping that veteran Brandon Browner could make the move to safety and be a player who helped them match up with opposing tight ends, but the experiment didn't work out. The coaches never used Browner creatively during the preseason, and apparently he didn't show them enough to warrant a spot as a backup safety.

Seahawks moves: FB Kyle Coleman, WR Montario Hunter, DE DeAngelo Tyson, DB Brandon Browner, WR Deshon Foxx, DT Sealver Siliga, RB George Farmer, CB Trovon Reed, DE Josh Shirley, WR Kevin Smith, RB Zac Brooks, LB Quayshawn Nealy, LB Pete Robertson, OL Kristjan Sokoli, OL Patrick Lewis.