According to Basketball Index, Williams was the NBA’s quickest decision maker in 2021. As an off-ball player he does have an advantage in the metric, but he outpaced the rest of the league in quick touch percentage by 25%
⬆️ High % of touches are quick decisions
⬇️ Low % of touches are quick decisions
➡️ Spend more time off-ball
⬅️ Spend less time off-ball

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Source: BBall Index