But when the final seconds ticked off the clock from OSU's 43-0 victory against I-AA opponent Youngstown State in the season opener for both teams, it was the true freshman who stood atop the statistic sheet.
The Buckeyes amassed 244 yards through the air and saw 11 different players record at least one catch, but it was Posey who topped them all with four catches for 47 yards and a touchdown.
Not a bad day for a freshman, but junior wide receiver Ray Small stopped short of calling Posey a freshman.
"He came in and I'm like, ‘This guy is not a high school player. He is from another college,' " Small said. "That's what it seemed like, he seemed so good."
Although Posey saw playing time early when seven freshmen all saw the field together for the third series of the game, his name did not find its way to the stat sheet until the final moments of the third quarter. When it did, though, it was worth the wait.
Facing a third-and-three situation from the YSU 25-yard line, Posey hauled in his first career catch on a short flare pass from quarterback Todd Boeckman. Junior cornerback Lenny Wicks came up to make the tackle but instead found only air as Posey juked him, raced down the sideline and found paydirt in the north end zone at Ohio Stadium.
It all happened so quick, the experience did not register with Posey.
"I was surprised," he said. "When he missed me I was like, ‘Oh man.' Then I didn't know I scored at first. It felt so good."
With the catch, Posey became the second wide receiver in as many years to record a touchdown with his first career catch. Last season, it was true freshman Dane Sanzenbacher who hauled in a 3-yard score from Boeckman on the first drive of the season.
Senior wide receiver Brian Robiskie drew a few parallels between Sanzenbacher and Posey.
"I don't know how they started it," he said. "Maybe it's just being in the right place at the right time, but both of those guys are smart, intelligent football players. Both of them are not going to make too many mental errors and they're not going to blow plays. When you see guys like that who are in the right places doing the right things, those are the guys who are successful."
Posey also spent time on the team's punt return unit, fielding one punt and returning it for a 4-yard gain.
The speed of the game was not difficult for the native of Cincinnati to overcome, he said.
"I'm kind of used to it now because in camp I go against the best cornerbacks in the country with Malcolm Jenkins and guys like Donald Washington every day," he said. "It's pretty hard to not simulate a game feeling in practice. It's really fast in practice."
One of the five-star prospects as ranked by Scout.com to join OSU for this season, Posey had put up plenty of impressive numbers during his prep career at Cincinnati LaSalle. However, he said he knows those accomplishments don't mean anything now that he is a Buckeye.
Same for the rest of his classmates, he said.
"We don't really think about that stuff," he said. "I know I don't. High school doesn't matter anymore now that we're in college, but it felt good to get out there and show everybody we can play with these guys."