Heel spurs develop in some people that have a condition called plantar fasciitis, inflammation of the plantar fascia. Heel spurs form when the plantar fascia separates from the calcaneus. An abnormal bone growth, a hook like spur, forms from calcium deposits that grow at the site of inflammation. As McEnroe has recounted, “I was getting all worked up and nutty.” At 5 5, Borg had had enough of McEnroe’s antics and motioned him to the net. McEnroe thought Borg was…