Nebraska quarterback Taylor Martinez has not practiced all week because of a turf toe, and he is likely to miss the Cornhuskers' game on Saturday against the South Dakota State Jackrabbits.
On Thursday, coach Bo Pelini indicated that freshman Tommy Armstrong would get the start over fifth-year senior Ron Kellogg III.
"If we were to (play) today, we'd probably start with Tommy Armstrong," Pelini told the Lincoln Journal-Star. "But you'll see Ronnie Kellogg. We want to make sure we look at this practice film."
Martinez, who has started the past 32 games for Nebraska, has missed only two games during his career. If he is not totally healthy, Pelini said Martinez will not even dress.
"I want him to be 100 percent, and I have full confidence in those two other quarterbacks," Pelini said.
Armstrong, a 6-foot-1, 220-pound Texas native, had a "tremendous" week of practice, Pelini said.
Armstrong has seen limited action, leading the Cornhuskers on a 64-yard scoring drive against Southern Mississippi earlier this season. He has yet to throw a pass.