ANN ARBOR, MI – SEPTEMBER 22: Adrian Martinez #2 of the Nebraska Cornhuskers throws a first half pass while playing the Michigan Wolverines on September 22, 2018 at Michigan Stadium in Ann Arbor, Michigan. (Photo by Gregory Shamus/Getty Images)Nebraska quarterback Adrian Martinez hasn’t made quite the jump that people were hoping for after his freshman season. His throwing has been iffy enough, for it’s his ball control that’s really become an issue.Speaking to the media, Nebraska quarterbacks coach Mario Verduzco addressed the issue of Martinez’s recent fumbles. He admitted that he isn’t entirely sure what Martinez’s issue is when it comes to fumbling.Via the Omaha World-Herald:“I haven’t noticed any particular issues with that in terms of the evaluation at all… Obviously, the game before this one, his eyes were all over the place. So that was the concern. But he got that corrected and away we go.”Martinez fumbled three times against Colorado. He lost two of them in what was an overtime loss to the Buffaloes. Last year, Martinez had the second-most fumbles in the nation.So far this season, Martinez has completed 60.4-percent of his passes for 468 yards, two touchdowns and two interceptions. Last year he finished the season completing 64.6-percent of his passes with 17 touchdowns and eight interceptions.Martinez will have two easier games against Northern Illinois and Illinois to fix the problem before the schedule difficulty ramps up against Ohio State.Can the Huskers compete for the Big Ten title while Martinez keeps putting the ball on the ground?