LINCOLN -- Nebraska quarterback Taylor Martinez is still listed day-to-day with a nagging turf toe injury and hasn't practiced since before the UCLA game. In fact, that's the last time Martinez played. Redshirt Freshman quarterback Tommy Armstrong has started the last two games for the Cornhuskers. Armstrong has been sharing the quarterback duties with senior Ron Kellogg III. Nebraska will continue preparations Wednesday for Saturday's Big Ten road trip to Purdue.