The 6-3, 175-pound Hartline finished second in the 300-meter intermediate hurdles (37.51 seconds) and was fourth in the 110-meter high hurdles (14.06).
Hartline is ranked as Ohio's 11th-best prospect by Ohio High.
During a quiet moment at the state meet, he discussed the upcoming season, when he figures to catch passes from his brother, junior quarterback Mike Hartline.
"You can't get much better chemistry than brothers, as far as a quarterback to a receiver goes," Hartline said. "You can't much more feeling for each other than being siblings. He's coming into his body. He's coming along fast. He's filling out. He's 6-5. I think he's going to be good."
Hartline said 31 schools visited GlenOak during the May evaluation period. He listed offers from Stanford, Michigan State, Pittsburgh and West Virginia.
He said OSU assistant Dick Tressel had also been in contact.
"He and Coach Bollman both came in," Hartline said. "I asked them if their camp was really a big deal for me. They said it is more of a reassurance. Hopefully, (an offer) will come then.
"I was down here for the Nike Camp in April and I felt apart from everybody else. When you get that feeling, good things happen. Hopefully I'll get that feeling again."
Hartline said he had not finalized his camp plans for the summer. But he will definitely be at Ohio State for not one but two separate events.
"I will be back here for the 22nd for the 25th," he said. "Then, I'll finish up with one of the senior days. Then, I'll also do a bunch of one-day camps. I haven't decided who yet. Pitt, probably, with my brother. Michigan wanted me to come, probably a lot of the Big Ten."
Hartline confirmed that his brother is already attracting interest.
"Kent State has offered him and Pitt is supposed to," he said. "It's not official, but they're talking like they're going to. He has to come to camp.
"We'd like to be a package and play together in college. Two brothers being together and playing really well would be huge. We'd love to do that."
Hartline holds a 3.85 GPA and will take the ACT Saturday.