Cowboys starting running back Felix Jones missed a second straight practice on Wednesday due to tightness in his hamstring. Jones is coming off of back-to-back 100-yard rushing performances for the first time in his career.

However, the Cowboys are optimistic Jones will be able to play Saturday.

"I'm planning on him," Cowboys running backs coach Skip Peete told DallasCowboys.com. "I'm hopeful to see what he can do either (Wednesday) or (Thursday). But at the end of the week obviously we've got to be able to see whether he can do some things and make a decision on whether he can play in the game or not."

The only other running back the Cowboys have on the roster is 34-year-old Sammy Morris. He was signed off the street last week and made his season debut last Saturday against Tampa Bay. The 6-0, 220-pound Morris was impressive nonetheless with 53 yards on 12 carries.

The following players also missed practice on Wednesday for Dallas: wide receiver Andre Holmes (hamstring), safety Danny McCray (ankle), wide receiver Kevin Ogletree (knee) and defensive tackle Josh Price-Brent (knee).

Cornerback Mike Jenkins (shoulder), guard Kyle Kosier (foot), defensive tackle Jay Ratliff (ribs), wide receiver Laurent Robinson (shoulder) and linebacker DeMarcus Ware (neck) were limited for the Cowboys. Linebacker Sean Lee (wrist) and punter Mat McBriar (left foot) were full participants in Wednesday's practice.

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