A tournament set up by WWE will hope to decide once and for all who is the greatest SmackDown Superstar of all time. 

The competition has seen 32 of the Blue brand's biggest stars split into four brackets of eight, each one named after a former GM of the show: Paul Heyman, Teddy Long, Vickie Guerrero and Paige. 

Fans can vote now in the tournament on WWE's official Facebook, Twitter and Instagram accounts.