Receiver Austin Mack is close to getting the green light to return for Ohio State’s game Saturday against Army despite bumping his head after a catch in the loss to Oklahoma and having to be taken from the field.

“He passed every test,” coach Urban Meyer said after practice Wednesday, referring to the cognitive exams a player must ace before being cleared. “He’s going to practice (Thursday).”

Mack’s leaping catch at the sideline of a J.T. Barrett pass in the third quarter was the first glimmer of a downfield passing game against the Sooners. It led to a field goal that put the Buckeyes ahead 13-10, though they ultimately lost 31-16.

Receiver expansion

Although some critics of the offense might think the Buckeyes would be better zeroing in on a couple of go-to receivers, offensive coordinator Kevin Wilson has a different take.

He said he’d like to see the receiver rotation, currently at six players (Mack, Parris Campbell, Terry McLaurin, K.J. Hill, Binjimen Victor and Johnnie Dixon) expand to seven or eight.

The could mean a couple of freshmen joining the group, including Trevon Grimes, who reportedly is showing improvement each week. He suffered a season-ending knee injury almost 12 months ago in his senior year at Aquinas High School in Fort Lauderdale, Florida.

What about Army’s D?

Although it’s natural to focus on Army’s unusual triple-option offense, Meyer pointed out the Black Knights have a difficult defense, too, starting with the odd-man front similar to what Oklahoma showed last week with its 3-4.

“There’s a nice little system that the service academies use, it’s the ‘Star Wars’ or odd (man front) defense, and they bring (pressure) from everywhere, which is really hard to prepare for,” Meyer said. “And then the wishbone offense, which is hard to prepare for.

“Then you put good players in it and they play extremely hard, they’re a very good team. And you can see why they beat Navy and they’re playing at such a high level.”

Weber update

Mike Weber, Ohio State’s 1,000-yard back last season, saw his first playing time of the year last week on a limited basis as he continues to recover from a strained hamstring.

Freshman J.K. Dobbins gained his second straight start, and Meyer said Wednesday they are continuing to be cautious with Weber.

“The further you get away from that injury — hamstrings are tough,” Meyer said. “But he’s practicing pretty good. We’ll know more” Thursday.