The Seahawks added 13 undrafted rookie free agents following the conclusion of last weekend's NFL Draft, a class comprised entirely of players on whom the Seahawks had placed a draftable grade, general manager John Schneider said.

"We signed 13 rookie free agents, and we had draftable grades on all of them," Schneider said on the Brock and Salk Show on 710 ESPN Seattle. "So you've got a room of personnel guys and coaches after the draft who are so excited, because we have our drafted class over here, and then we have a rookie free agent class over here that everybody is really jacked up about."

The Seahawks have also signed nine of their 10 2016 draft picks, all but seventh-round pick Zac Brooks.

Among Seattle's undrafted rookies is TCU quarterback Trevone Boykin, who will come in to compete for the backup quarterback job behind Russell Wilson. Tarvaris Jackson, Wilson's backup for the past three seasons, is currently a free agent. The Seahawks also signed former Skyline High School quarterback Jake Heaps, who along with Boykin will take part in this weekend's rookie minicamp, which begins today.

Seattle's undrafted class also includes former Western Kentucky all-conference basketball player, George Fant, who played football his final year of college. Fant could compete at tight end, his college position, or offensive tackle.

During his 710 ESPN Seattle interview, Schneider mentioned that Florida Atlantic defensive lineman Brandin Bryant will play some fullback with Seattle, as will former USC running back Tre Madden. The Seahawks currently don't have a fullback on their roster, as both of last year's fullbacks, Derrick Coleman and Will Tukuafu, are free agents.

Schneider also mentioned that East Carolina's Montese Overton and Oregon's Christian French will get a chance to compete at strongside linebacker, a position at which the Seahawks lost last year's starter, Bruce Irvin. Seattle also has in-house options to replace Irvin in the base defense, however, including Mike Morgan and Eric Pinkins.

Seahawks Undrafted Free Agents

QB Trevone Boykin, TCU, 6-0, 213

FB/DT Brandin Bryant, Florida Atlantic, 6-2, 289

CB DeAndre Elliott, Colorado State, 6-1, 189

T George Fant, Western Kentucky, 6-5, 296

DE Christian French, Oregon, 6-5, 249

DT Lars Koht, Florida International, 6-5, 279

LB Steve Longa, Rutgers, 6-0, 241

RB Tre Madden, USC, 6-0, 223

T Lene Maiava, Arizona, 6-4, 314

WR Tanner McEvoy, Wisconsin, 6-6, 230

DE Montese Overton, East Carolina, 6-1, 226

DE David Perkins, Illinois State, 6-2, 233