Great news! Isaac is up and moving wonderfully! Friday was really the last rough day. Friday morning he was pretty slow moving. Friday evening, he was much better. Saturday, he was basically back to normal, although he missed his first game of the season - better to be safe since he could barely walk the day before. Today he is outside playing in the yard. Walking great, and I just glimpsed him out the window a moment ago running through the yard in the midst of a sword fight with his sister. I think we're good to go. He will try practice tomorrow. Keeping my fingers crossed!