Dirk Nowitzki has the most career points per game + assists per game per turnover per game when putting up 20.0+ points per game, with 14.12.

highest all-time (pts per game + ast per game) / tov per game, 20+ ppg
Interpreted as:
highest all-time (pts per game + ast per game) / tov per game by a player, 20+ ppg

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