Washington Redskins defensive end Jarvis Jenkins missed Saturday’s practice with what Coach Mike Shanahan described as flu-like symptoms.

Jenkins, projected to have a significant role in Washington’s defense, is expected to return to action on Monday, Shanahan said.

Jenkins, whom Washington drafted in the second round of the 2011 draft, played in Thursday’s preseason opener, his first game in nearly a year after suffering a season-ending torn ACL in the third preseason game last August.

Jenkins has gradually worked his way back from surgery, and defensive coordinator Jim Haslett said that after a slow start, Jenkins had his best practices this week. Jenkins then had a solid showing against Buffalo and reported no setbacks with his knee.

“I should do nothing but get better each game,” Jenkins said. “There’s no excuse for me to take a downfall now. I set the tempo for how I should play for the rest of the season and should just keep getting better.”