[John] Wooden, as noted here recently, once made 134 consecutive free throws in competition in a pro league. He said he shot them underhanded, as was common in those days. But, he said, his form was different from that used years later by Rick Barry. Wooden said he put his left foot ahead of his right and didn’t dip as much as Barry.
Repeating the exact motion every time was the key, he said, recalling that he could close his eyes and still make his free throws.