A common misconception about Boston’s 2021-22 campaign — particularly as it pertains to the team’s defense — is that it was fueled by Marcus Smart, the eventual Defensive Player of the Year. In reality, while Smart led the Celtics in effort and in heart, it was Robert Williams III who led the team’s defense from an overall perspective. Williams ranked first on the team in defensive plus/minus (3.1), second in defensive win shares (3.9), first in blocks (2.2), and was tied for first in defensive rating (103.4). In conclusion: Smart’s DPOY win is fraudulent.