Austin has been ruled out for this Sunday's game against the Buffalo Bills. He suffered the injury while catching a 37-yard pass near the Cowboys' sideline in the second quarter. Austin left the game immediately and didn't return.
Cowboys owner and general manager Jerry Jones said Monday that he won't sign a veteran receiver to fill the void.
"We've got [Dwayne] Harris on the practice squad," Jones said on KRLD-FM, referring to the sixth-round pick who was demoted from the active roster a couple of weeks ago. "That'll be where we limit it to. It won't be away from the roster."
It's the second time this season Austin has suffered a hamstring injury. He injured his left hamstring at the end of training camp and, after playing in the season opener, he re-injured it in the Week 2 victory at San Francisco.
Austin missed two games because of that injury.
"It just hurts," Austin said Sunday. "It's my hamstring, and it's pretty painful and that's all I know. This one is higher, the other one was lower."
Austin, who left the locker room Sunday with a slight limp, has 28 catches for 403 yards and four touchdowns in six games this season. He hasn't caught a touchdown pass since Week 2.
"I'm just pretty frustrated," Austin said.
Calvin Watkins covers the Cowboys for ESPNDallas.com.