Moore, a second-year starting weakside linebacker, was taken to a Green Bay hospital but flew home with the team. He was diagnosed with a neck strain. It is not known if Moore will play Thursday against Seattle in the preseason finale or if the Raiders will wait until the regular-season opener at the New York Jets on Sept. 7 to get him back on the field.
"He moved around some out there," Raiders coach Dennis Allen said of Moore. "He is still not 100 percent."
Meanwhile, as expected, starting quarterback Matt Schaub missed his third straight day of practice with elbow soreness. Allen and Schaub called the issue minor, and they both expect Schaub to play against the Jets.
Allen said Schaub will not play Thursday. Rookie Derek Carr will start in his place.
Schaub threw on the side Tuesday for the first time since the injury, which Allen called a "good sign."