Russell Westbrook had a plus-minus of -37 in the 2020 playoffs.

russell westbrook plus minus 2020 playoffs
NAMESEASONTMGP+/-MPGPPGRPGAPGSPGBPGTPGFGMFGAFG%3PM3PA3P%FTMFTAFT%MINPTSREBASTSTLBLKTOVPF
Russell WestbrookRussell Westbrook2019-20HOUHOU8-3732.817.97.04.61.50.33.87.417.542.11.04.124.22.14.053.126214356371223023
StatMuse has season-level data for +/- going back to the 1997 playoffs.