Stephen Curry has the highest On/Off Net Rating during the playoffs of any player of the Golden State Warriors' Big 4.
The Warriors have a +24.2 Net Rating when Curry is on the court and -3.5 when he's off the court, which is a +27.7 On/Off.
Draymond Green ranks second at +16.8, followed by Kevin Durant at +9.6 and Klay Thompson at +9.5.
Curry also had a higher Net Rating during the regular season.
Via NBA Math