George scored 23 points -- including 17 from the free-throw line -- distributed 12 assists and grabbed 11 rebounds for the Pacers, who recorded their first win in a post-season series opener since 2006.
Lance Stephenson and David West each helped out with 13 points for the winners.
Jeff Teague donated 21 points and seven assists for the Hawks.
Caroline Berg Eriksen: Soccer player's wife triggers debate with post-birth selfie
Britney Spears on kissing Ryan Gosling, Justin Timberlake in the Mickey Mouse Club