Michael Jordan had an eFG% of 50.4 in the NBA Finals in his career.

michael jordan finals efg%
NAMESERIESGPEFG%MPGPPGRPGAPGSPGBPGTPGFGMFGAFG%3PM3PA3P%FTMFTAFT%MINPTSREBASTSTLBLKTOVPF+/-
Michael JordanMichael JordanNBA Finals3550.443.033.66.06.01.80.72.812.526.048.11.23.336.87.49.180.61,5061,176211209622399103+45
StatMuse has game-level data for eFG% going back to the 1956 Finals.

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