Based on a similar experience from last November, Vikings Pro Bowl middle linebacker E.J. Henderson said he's "pretty confident" he will play in Sunday's home opener despite missing practice Thursday and Friday because of a sore and swollen left knee.
"I think we had one episode last year where it swelled up a lot," Henderson said. "We pretty much had to do the same thing -- drain it, treat it and I made it out there Sunday. This is nothing out the ordinary. Just maybe a little more swelling, a little more pain, but it's something that we're dealing with, and hopefully I'll be ready to rock on Sunday."
Henderson had fluid drained from the knee Thursday and said he was feeling better Friday. An X-ray on Thursday revealed no structural damage.
Coach Leslie Frazier is cautiously "hopeful" that Henderson will play but called it a game-time decision based on a pregame workout at the Metrodome before the team plays the Tampa Bay Buccaneers. Officially, Henderson is listed as questionable, meaning he has a 50 percent chance of playing.
"The swelling is down, so that was a good thing," Frazier said. "But he still looked tender. ... When he said that he was struggling a little bit, you have to pay attention because he never talks about injuries at all. It's not who he is. If there's anybody who can play through things, E.J. Henderson can."
Overnight, the Vikings went from being injury-free coming out of Week 1 to potentially losing a starter at the position with the least depth.
Jasper Brinkley, a reliable backup the past two years, had hip surgery and was placed on injured reserve two weeks ago. That forced the Vikings to scramble after making their final cuts Sept. 3.
They claimed Xavier Adibi, a career 3-4 inside linebacker, off waivers from Houston on Sept. 4. But Adibi, a four-year veteran with eight starts, isn't ready to assume the starting job in a 4-3 defense. So the Vikings, at this point, would move starting weak-side linebacker Erin Henderson to the middle and insert Kenny Onatolu, a special teams player, at weak-side linebacker. Signing another linebacker was discussed but dismissed, Frazier said.