Hi Ron, Usually with ligament sprain grade 1 pain occurs with running activities. I think your muscle tightness words make sense. If stretching you calf muscles is helping you, you should continue that. As far plantar fasciitis is concerned. first symptom is heel pain in early morning and after sitting for longer time. I would suggest to use ice at pain site and stretches for calf muscles. Gastrocnemius and soleus stretches which you could find it online.