UM cornerback David Long on why he took to Twitter on Sunday after the Northwestern game. Angelique S. Chengelis, The Detroit News


Ann Arbor — Michigan cornerback David Long, apparently fed up with criticism of the defensive backs following the win at Northwestern, took to Twitter Sunday morning to share his thoughts.

The Wolverines gave up 105 yards in the first quarter and trailed by 17 before the defense stuffed the Wildcats the next three quarters in a 20-17 comeback victory. Michigan’s defense is ranked No. 1 nationally and is No. 4 defending the pass, yielding an average 146.2 yards.

Long said Tuesday after practice there was “nothing in particular” that provoked him to post on Twitter: “If you’ve never played man-to-man please refrain from making comments about secondary play. Second, if you can’t check me please refrain from giving your hot take as well.”

More: UM coaches love Patterson's leadership skills

Long was asked Tuesday why he felt the need to use social media to get his message across.

“Just people don’t know what we go through here,” Long said. “I just think they should leave it at that and let us work and let us do what we do.”

Defensive coordinator Don Brown, he said, told them to ignore any outside talk.

“You’ve got to put your head down and stay in the foxhole like Coach Brown said,” he said. “Nobody knows what we go through here, so you’ve got to keep it at that and keep working.”

One-of-a-kind Mason

Fullback Ben Mason is a block of man at 6-foot-3, 251 pounds, and he means it when he says he enjoys contact on the field.

Mason scored three touchdowns in the first half of the Nebraska game, becoming the first Michigan player to do so since quarterback Denard Robinson against San Diego State in 2011.

“I don’t think Ben Mason is like anyone,” offensive lineman Stephen Spanellis said Tuesday night. “That man is one of a kind, truly unique. You can just see it in his eyes that he just wants to shove his face into somebody else’s face at full speed.

“He doesn’t have any reservation about throwing his body on the line. He really wants to. I can’t say I necessarily I have no reservations. He kind of has a potential to be a (former NFL back) Brandon Jacobs-type of player for us if we end up using him as a running back more.  But also he’s the greatest blocker. He’s probably the best fullback in the country, not that I’ve scouted them. He’s big, athletic, he can run.  He’s smart, he knows the game.

“For the most part, he’s a heat-seeking missile.”

Spanellis said Mason gets the offensive linemen fired up.

“Have you ever watched his high school film? You should. All he did was run for like 60-yard touchdowns in high school,” he said. “He’s definitely a combo back, I would describe him as. He’s a fullback, but he could play running back. When we put him at running back, it’s not a gimmick.

“I want to see more of him. I get so fired up when he’s back there. I think as an offensive lineman when you know the running back is going to run over someone it gives you more incentive to block — if he’s going to run over people then I can get downfield and I can get extra blocks and push the pile. That’s the most fun thing to do as an offensive line is to complete those downfield blocks and push the pile.”

Injury update

Michigan receiver Nate Schoenle has been “working through something” — Michigan coach Jim Harbaugh's code for an injury — the coach said Tuesday during the Big Ten conference call. He said he hopes Schoenle can return this week or next.

Twitter: @chengelis