[CBS Sportsline] The Chiefs announced on Friday that the club has signed its first-round draft pick DE Tyson Jackson.

The third overall pick in this year’s draft arrived in River Falls in the morning, passed his conditioning test, then was on the field for the Chiefs afternoon practice. He had been training with his LSU teammates back home, but was still a bit rusty and had to run a lap after jumping offside during one drill.

Jackson stayed after practice an extra 30 minutes with defensive line coach Tim Krumrie.

“I’m so far behind, I’m just trying to get into the playbook and learn as much as I can before we get started with the preseason,” Jackson said. “I just want to be out here with my teammates when they’re sweating.”

Strong and quick at 6 feet 4, 296 pounds, Jackson is projected to start opposite former LSU teammate Glenn Dorsey on the front line of Kansas City’s new 3-4 defense. Jackson had 18.5 sacks and 122 tackles in 53 games at LSU, including 4.5 sacks his senior season.