Draymond Green and Klay Thompson are tied for the best winning percentage in the playoffs when playing >100 games, winning 69.9 percent of the time.

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highest playoffs winning percentage ever for nba players with more than 100 games
GreenThompsonCurryHarperRodmanCooperLivingstonJohnsonWorthyRambisArmstrongPerdueJordanSalleyKerrHeinsohnScottJamesPippenGrantAbdul-JabbarJonesRussellGreenFox.699.699.688.688.686.685.683.674.671.669.667.667.665.664.664.663.656.654.654.653.650.649.648.641.640
NAMEGPW%MPGPPGRPGAPGSPGBPGTPGFGMFGAFG%3PM3PA3P%FTMFTAFT%MINPTSREBASTSTLBLKTOVPF+/-
Draymond GreenDraymond Green123.69935.612.59.36.11.61.52.64.49.944.51.23.731.52.53.473.74,3761,5361,149754197180325458+888
Klay ThompsonKlay Thompson123.69937.219.34.02.21.00.51.87.216.244.23.07.341.51.92.284.14,5702,37248627211966220336+554
Stephen CurryStephen Curry112.68837.826.55.46.31.60.33.58.719.445.04.210.540.14.85.390.64,2352,96860470418130390282+777
Ron HarperRon Harper112.68826.89.03.72.71.30.71.13.57.945.00.51.729.21.42.169.83,0001,01341730514176121245+206
Dennis RodmanDennis Rodman169.68628.36.49.91.20.60.61.52.65.349.00.00.314.91.12.154.04,7891,0811,67620510697258630+127
Michael CooperMichael Cooper168.68528.29.43.44.21.20.61.53.57.446.80.71.939.21.72.182.54,7441,58157470320396252474
Shaun LivingstonShaun Livingston126.68319.46.42.62.40.40.21.02.65.250.70.00.128.61.21.481.92,4508093322975428129244+177
Magic JohnsonMagic Johnson190.67439.719.57.712.31.90.33.76.813.450.60.31.124.15.66.783.87,5383,7011,4652,34635864696524
James WorthyJames Worthy143.67137.021.15.23.21.20.72.18.916.354.40.10.520.93.34.672.75,2973,02274746317796298352
Kurt RambisKurt Rambis139.66918.55.25.50.90.60.51.02.03.657.40.00.00.01.11.570.22,5657197641198568141373
B.J. ArmstrongB.J. Armstrong105.66722.57.91.42.40.80.00.83.06.447.10.51.145.11.41.783.22,36482815125282379171-38
Will PerdueWill Perdue108.66711.63.43.50.30.10.40.71.32.452.70.00.025.00.81.363.31,25636737734154273206-23
Michael JordanMichael Jordan179.66541.833.46.45.72.10.93.112.225.148.70.82.533.28.29.982.87,4745,9871,1521,022376158546541+294
John SalleyJohn Salley134.66420.16.44.40.80.41.20.82.24.450.50.00.00.02.02.969.02,69485758810449159107420-37
Steve KerrSteve Kerr128.66415.64.30.91.20.50.00.31.53.542.60.71.837.00.70.887.61,99755311015663341142+149
Tom HeinsohnTom Heinsohn104.66331.019.89.22.17.919.640.24.15.574.33,2232,058954215417
Byron ScottByron Scott183.65629.313.42.92.11.20.21.55.110.648.20.71.939.52.53.081.95,3652,45153639022630266445+69
LeBron JamesLeBron James266.65441.528.79.07.21.70.93.710.220.749.51.64.833.76.68.974.011,0357,6312,3911,919454252975616+1310
Scottie PippenScottie Pippen208.65439.017.57.65.01.90.92.96.414.544.41.03.230.33.75.172.48,1053,6421,5831,048395185602686+232
Horace GrantHorace Grant170.65336.311.28.62.11.01.01.14.68.753.00.00.012.52.02.871.46,1721,9071,457360171173184515+61
Kareem Abdul-JabbarKareem Abdul-Jabbar237.65037.324.310.53.21.02.42.69.918.753.30.00.00.04.46.074.08,8515,7622,481767189476447797
Sam JonesSam Jones154.64930.218.94.72.37.516.744.74.04.981.14,6542,909718358391
Bill RussellBill Russell165.64845.416.224.94.76.114.243.04.06.760.37,4972,6734,104770546
Danny GreenDanny Green153.64125.68.13.21.21.10.80.82.97.140.51.84.838.70.50.675.33,9121,232497189162120128317+585
Rick FoxRick Fox111.64022.86.63.22.20.80.21.42.45.444.40.82.236.01.01.280.12,5277293532468427151320+252