Original: Seven different defensemen won the Hart Trophy before the Norris Trophy's establishment: Billy Burch, Eddie Shore (four times), Herb Gardiner, Albert "Babe" Siebert, Ebbie Goodfellow, Tommy Anderson and Babe Pratt.
Simplified: Seven different defensemen won the Hart Trophy before the Norris Trophys establishment: Billy Burch, Eddie Shore (four times), Herb Gardiner, Albert "Babe" Siebert, Ebbie Goodfellow, Tommy Anderson and Babe Pratt.