Tim Duncan averaged the most points per game by a player in the NBA Finals in his 15th playoff, with 18.9 per game.

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who has the highest points per game in their 15th finals
DuncanKiddHorry18.97.73.0
NAMESERIESGPPPGMPGRPGAPGSPGBPGTPGFGMFGAFG%3PM3PA3P%FTMFTAFT%MINPTSREBASTSTLBLKTOVPF+/-
Tim DuncanTim DuncanNBA Finals718.936.312.11.40.91.42.37.114.649.00.00.04.65.682.125413285106101616+29
Jason KiddJason KiddNBA Finals67.737.44.56.31.20.83.52.36.038.92.04.742.91.01.375.022546273875216+42
Robert HorryRobert HorryNBA Finals43.022.04.53.30.31.31.30.82.333.30.82.037.50.81.075.0881218131557+27