Emmitt Smith is expected to miss two to four weeks after spraining a knee and ankle in the Dallas Cowboys' 20-3 exhibition loss to the Denver Broncos Saturday night, but he could possibly play in the Cowboys' season opener at Chicago on Sept. 2.
"Our goal is for him to be in Chicago," trainer Jim Maurer said Sunday after Smith underwent an MRI. "It's not unrealistic."
Maurer said Smith had a first-degree sprained medial collateral ligament in his left knee and that his ankle was slightly swollen and bruised.
Smith was injured when his teammate, 340-pound tackle Erik Williams, fell on him in the second quarter.
The San Francisco 49ers (1-2) gave up the ball on punt returns, gave up field position on kickoff returns and gave up points with more bad snaps by the field goal unit.