Canelo Alvarez vs. Edgar Berlanga fight: Biggest storylines to watch in title showdown in Las Vegas

The unified super middleweight title is on the line on Saturday night

Saul "Canelo" Alvarez, the biggest boxing star of his generation, returns to the ring once again on Saturday night. Alvarez will be defending his three super middleweight world championships against Edgar Berlanga in a pay-per-view main event.

Berlanga made a name for himself as a knockout artist. As a man of Puerto Rican descent, it comes with a built-in rivalry with the Mexico. The Mexico vs. Puerto Rico rivalry has deep roots in boxing and Alvarez has made that a selling point for why he made the fight rather than some others that boxing fans have been demanding.

There are also recognizable names up and down the card, including many past or current champions.