The amazing thing about Derrick White is that even last season, when it looked like he was playing terribly, he managed to contribute to winning. In 26 regular season games he played for the Celtics in 2021/22, the team record was 20-6 and he had a plus/minus of +170 (+6.5 per game). His shooting "slash" was 41%/31%/85%, pretty underwhelming at best. But he rebounded well for his position, got assists, minimized turnovers, and played solid defense.
This season, he is doing all of that and also hitting shots. He improved his shooting slash to 46%/39%/87% with rebounds and assists slightly up (in similar minutes), and turnovers slightly down.
Derrick White is a tremendous find by Stevens.