Done this in both knees skiing. Doc said worst one he had seen without a tear. Told me it stretched to its limit and then snaps back thus the bones crash and bruise. I took about 3 weeks with no pain at all walking and another month before could actively exercise again. Was told I could do it if I could tolerate it after the pain went away. It was so bad I couldn’t lift my legs the next day from the internal swelling. Complete guess is he is out 4 weeks at least but hoping it’s minor. Ohio state will be unlikely unless he just decided to go. But who knows how fast he heals. Maybe they can get a witch doctor to come get that pain out and stabilize the ligament. He is lucky! Love the Goosby family!