Updated: December 19th, 2012 12:15pm
Vikings' Brian Robison has Grade 3 shoulder sprain, remains day to day

Vikings' Brian Robison has Grade 3 shoulder sprain, remains day to day

by Tom Pelissero
1500ESPN.com
Email | Twitter
SportsWire Daily

Get the 1500 ESPN SportsWire delivered to your inbox daily, and keep up with all the news in Twin Cities Sports

Signup!

EDEN PRAIRIE, Minn. -- The Minnesota Vikings aren't ruling out Brian Robison for Sunday's key game at Houston, but the starting left end may be facing an uphill battle.

Robison has a Grade 3 strain of the AC joint in his right shoulder, coach Leslie Frazier said on Wednesday. That diagnosis means a complete tear of ligament fibers resulting in joint dislocation.

"We're hoping that he'll make it," Frazier said. "But it'll be day to day. We probably won't know anything until probably Friday, just to see whether he's making continued progress throughout the week."

If Robison can't go, the Vikings presumably would start Everson Griffen, who returned an interception 29 yards for a touchdown after Robison was injured early in last weekend's win at St. Louis.

Robison was among three Vikings who did not practice Wednesday.

Also sitting out were running back Adrian Peterson and left tackle Matt Kalil, who is ill. Peterson was listed as having abdomen and groin issues but also was just getting a rest.

Five players were limited for the Vikings, including cornerback Antoine Winfield (knee); defensive end Jared Allen (shoulder); punter Chris Kluwe (left knee, right groin); right tackle Phil Loadholt (knee); and safety Mistral Raymond (ankle).

Griffen (elbow) and cornerback Marcus Sherels (quadriceps, elbow) were listed on the injury report but did not miss any practice time.

The Texans have 17 players on their injury report, including 10 who either sat out or were limited.

Cornerback Alan Ball (foot) did not practice Wednesday.

Limited for the Texans were nose tackle Shaun Cody (back); linebackers Tim Dobbins (shoulder, thumb), Brooks Reed (groin) and Darryl Sharpton (toe); cornerback Johnathan Joseph (groin); tackle Derek Newton (knee); safety Glover Quin (hip); defensive end Antonio Smith (ankle); and guard Wade Smith (knee, ribs).

Judd Zulgad contributed

Tom Pelissero is Senior Editor and columnist for 1500ESPN.com. He hosts from 6 to 8 p.m. weeknights and co-hosts from 10 a.m. to noon Sundays on 1500 ESPN Twin Cities.
Email Tom | @TomPelissero | Tom Pelissero
6311