McIntosh will soon undergo season-ending surgery. He won't make the Seahawks' 53-man roster as a result. With the RB3 spot now wide open behind Kenneth Walker III and Zach Charbonnet, rookie running back Damien Martinez will feel pressure to fill that role.

The team signed undrafted rookie running back D.K. Kaufman from North Carolina State to fill the open spot of the 90-man preseason roster. The 5-foot-8, 206-pound Kaufman was in Seattle rookie minicamp in May as a tryout player. He was a college safety at Vanderbilt, Auburn and N.C. State.

Seattle Seahawks running back Kenny McIntosh was placed on injured reserve Monday with a torn ACL that will require surgery, coach Mike Macdonald said. McIntosh, who was competing for the No. 3 running back spot behind Kenneth Walker III and Zach Charbonnet,