HBO Boxing Insiders Eric Raskin and Kieran Mulvaney discuss the news about the Gennady Golovkin-Canelo Alvarez rematch deal getting done, then they continue the Greatest HBO Fighter of All-Time tournament by revealing the four matchups in the "Kellerman Region" and analyzing the cases for and against each of the eight fighters. To vote for your GOAT, visit insidehboboxing.com.