Although Schwartz will not play in Saturday's contest against Indiana (noon, ESPN), Tressel said he is glad the situation is not worse. The injury occurred during a one-on-one pass coverage drill.
"He dove for a ball and a guy came down on top of him with his knee," Tressel said. "It looked like it was one of those real serious injuries. Fortunately, I think he was just whacked real hard on a nerve and got traumatized."
Tressel said Schwartz is walking and doing fine, although he said he had only spoken with the wideout via telephone Thursday. For the OSU coach, the incident brought flashbacks to a 2006 spring practice during which walk-on Tyson Gentry was paralyzed.
Once Tressel saw Schwartz moving, he thought he could have suffered a dislocated hip or a similar injury. His status for next week's road contest against Wisconsin is up for debate.
"It will be interesting because I don't know how trauma on a nerve, if that's a quick bounce-back (or not)," he said. "I'm just happy he's up an around, because those aren't fun."
The injury was to Schwartz's lower back and not his neck, the coach confirmed. A reserve wideout, Schwartz has recorded four catches for 26 yards this season.
He was not injured during Wednesday's practice, but sophomore tight end Jacob Stoneburner will likely miss his second consecutive contest after suffering a high ankle sprain Sept. 25 against Eastern Michigan.
"I don't think he'll be ready to go," Tressel said. "It's very close. In my mind, he just hasn't done enough whacking or pushing off. Unless we get some miracle big jump, I don't think he'll be with us this week."
Tressel said the coaches will continue to evaluate Stoneburner on a day-by-day basis.
"He's moving around good and catching routes and all that stuff," he said. "I just don't know if he's ready for collisions."
The injury news is better concerning junior quarterback Terrelle Pryor, who suffered a strained left quadriceps in last weekend's win against Illinois. Pryor returned to action after missing seven plays and Tressel said he is 100 percent healthy.
"I thought he had as crisp a day footwork-wise in the passing game with the sets and the delivery yesterday (as he's had)," the coach said. "Now, he's got to back it up today with a good one but I thought he had as sharp a day as he's had.
"If you were at practice, you wouldn't know (he had been injured)."
Pryor's injury came as he rushed around left end on a chilly afternoon. Afterward, the quarterback said he heard a pop that had him concerned. Tressel said the noise Pryor heard came from his knee brace.
"The brace popped," Tressel said. "That's a scary phrase. That's the first thing that they asked Grant: did you hear a pop? You're wondering if it's a joint location (or) a connective tissue snap. You don't like that phrase.
"I've never run fast enough to hear a pop."
Tressel said he does not figure to alter the team's game play for the Hoosiers to take into account an injured Pryor. A victory would give the head coach his 100th career victory at Ohio State.
Although he has been reluctant to discuss the significance of such a win, Tressel said he recalled his father Lee's 100th career victory while coaching at Baldwin Wallace.
"I remember his 100th win significantly because I played in it," he said. "That was neat. Now did he make a big deal about it? I don't know if he even knew."
In the contest, Jim Tressel – a senior – threw a 9-yard touchdown pass and helped the B-W offense rack up 343 yards of offense on the road against Heidelberg.