Adrian Martinez has yet to officially be ruled good to go for this afternoon’s game against the Michigan Wolverines. However, things are looking promising for the four-star freshman quarterback.Martinez, who missed last week’s upset loss against Troy, is recovering from a knee injury he suffered in the season-opening defeat to Colorado. The dual-threat quarterback is expected to be a game-time decision against Michigan this afternoon.Nebraska has listed the starting quarterback as “probable” for this afternoon’s game.Nebraska – Adrian Martinez (knee) is probable today versus Michigan.— FreePlaysPicks (@FreePlaysPicks) September 22, 2018Scott Frost had said earlier this week that a decision on Martinez would be made based on both his physical and mental state. He needs to be ready to go in both areas.“He’s further along,” Frost told reporters. “Again, it isn’t just ‘Is he ready to go?’ It’s ‘Is he ready to go mentally and physically to the point that he can protect himself in the game and make sure he stays healthy?’“He’s really close. We gotta make a final decision.”The Omaha World-Herald doesn’t believe Martinez will play unless he’s 100 percent:Judging by what Frost said, it sure didn’t sound as if Martinez is 100 percent. And the part about protecting himself and making sure he stays healthy? That says it’s still the No. 1 concern.A quarterback can’t make plays and lead larger-than-life drives in front of 111,000 fans and King Khaki and pay attention to whether he’s protecting himself. He has to flow. He has to play by instinct.Even if he’s ready, Nebraska is still a decided underdog in this one. So is it really worth the risk of having Martinez re-injure the knee and miss the rest of the season if he’s “close?” No.Martinez was seen warming up on the field earlier this morning with his Huskers teammates.Quarterback Adrian Martinez and the Huskers enter “The Big House” at Michigan Stadium. pic.twitter.com/DcTlbMp6Uh— Ross Jernstrom WOWT (@RossJernstrom) September 22, 2018Martinez is the big key for Nebraska today, obviously. The Huskers will be forced to start a walk-on under center if Martinez is unable to go.Michigan’s defense is fierce, but the Wolverines have had problems before with dual-threat quarterbacks. Martinez could pose some major problems for Michigan if he’s able to go this afternoon.An official ruling on Martinez likely won’t be made until right at kickoff. Nebraska and Michigan are set to kick off at noon on FOX Sports 1.