Fortunately for the Cornhuskers, the defense is showing a ton of confidence as they prepare for the regular season.Martinez spoke to the media about how the defense looks in preseason camp. His review of the defense was glowing to say the least.From the Lincoln Journal Star:“They’ve been good. We’re starting to bounce back a little bit as an offensive unit the past couple days with the scrimmage, but the D-Line’s been great, the DBs have a ton of confidence,” Martinez said. “I’ve spoken on this a ton, but I’m really excited for them this year. They look like a real good group right now, a new group with confidence, and I’m excited for them and for us and for our team.”Last season, the defense gave up 31.2 points per game. They’ll need to be much better this year if they want to compete for a conference title.Nebraska starts the season at home against South Alabama. It’ll be the first opportunity for the defense to showcase its improvement.[Lincoln Journal Star:] LINCOLN, NE – SEPTEMBER 08: Quarterback Adrian Martinez #2 of the Nebraska Cornhuskers passes against the Colorado Buffaloes in the first half at Memorial Stadium on September 8, 2018 in Lincoln, Nebraska. (Photo by Steven Branscombe/Getty Images)While all the buzz for the Nebraska Cornhuskers surrounds Scott Frost and his offensive system, led by quarterback Adrian Martinez, it appears the defense should also turn a few heads this fall.The biggest reason that preseason projections have Nebraska trending up in the Big Ten is because of its quarterback. Martinez is entering his sophomore season and has been tabbed as a threat to win the Heisman Trophy.Nonetheless, the difference maker for the Cornhuskers might just be their defense.If Nebraska wants to knock off rivals such as Iowa and Ohio State, it’ll need its defense to contain opposing quarterbacks like Nathan Stanley and Justin Fields.