Markelle Fultz and his longtime trainer, confidant and family friend, Keith Williams, made significant alterations to his shooting form in the months leading up to the start of the Sixers’ season, according to multiple sources who spoke to The Athletic on the condition of anonymity.



These changes were described as an effort to quicken his shot, shorten the dip in his shooting mechanics and bring his set point over to the right side of his body, according to sources with knowledge of the changes Fultz made over the summer.



The early stages of these changes were evident by the time Fultz began working out for teams leading up to the draft last June, according to a source who spoke to The Athletic and was privy to these workouts. The changes became more pronounced by the time Fultz arrived at training camp in September.



Fultz and Williams returned to the gym at the conclusion of the Las Vegas Summer League in July, where they continued working to alter the...