How can Alvarez become top pound-for-pound fighter?

Canelo Alvarez defeated both Rocky Fielding and Gennady Golovkin in 2018, but SI's Chris Mannix has him behind one fighter in his pound-for-pound rankings.

Canelo Alvarez defeated both Rocky Fielding and Gennady Golovkin in 2018, but SI's Chris Mannix has him behind one fighter in his pound-for-pound rankings.