There had been some initial speculation that this is the same injury that had plagued him earlier in the season, both those injuries were to the hamstring on his left side.
Austin injured himself in the second quarter of Sunday's game while making a 37-yard catch along the sideline. TV pictures showed him pulling up and limping while running out of bounds, though no significant contact with a defender was evident.
The reception was his second and final catch of the day, giving Austin a total of 28 receptions for 403 yards and four touchdowns for the season.
Mosley also writes that he's been told by a source that 'there's a "much better chance" Sean Lee will play this week.'
Austin was replaced quite well by Laurent Robinson, who notched five receptions on five targets for 35 yards and a TD. But with the state of the Cowboys' run defense, having Sean Lee return may arguably be more important for the Cowboys right now than having Austin return.