Two world title rematches and four blood-and-guts warriors are coming to Tucson Arena Saturday evening for "Twice as Nice," one of the year's most highly anticipated cards (ESPN and ESPN Deportes, 10 p.m ET/7 p.m. PT). (photos by Mikey Williams).

In the main event, WBC super featherweight world champion Miguel “El Alacran” Berchelt (35-1, 31 KOs) and Francisco “El Bandido” Vargas (25-1-2, 18 KOs) will look to repeat the thrills of their January 2017 match, won by Berchelt via 11th-round knockout.

And, in the co-feature, Emanuel Navarrete (26-1, 22 KOs) will defend his WBO junior featherweight world title against Isaac Dogboe (20-1, 14 KOs), the man he defeated by unanimous decision to win the title back on Dec. 8.

• Fazliddin Gaibnazarov 141.8 lbs vs. Mykal Fox 142 lbs

(Super Lightweight - 10 Rounds)

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• Carlos Castro 121 lbs vs. Mario Diaz 120.8 lbs

(Castro's WBC Continental Americas super bantamweight title - 10 Rounds)

• Manny Guajardo 156.4 lbs vs. Jonathan Espino 156 lbs

(Middleweight - 4 Rounds)

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•  Carlos Velasquez 133.2 lbs vs. Demetrius Mora 132.6 lbs

(Lightweight - 4 Rounds)

• Miguel Parra 142 lbs vs. David Morales 140.2 lbs

(Super Lightweight - 6 Rounds)

• Miguel Marriaga 136.2 lbs vs. Ruben Cervera 135.6 lbs

(Lightweight - 8/6 Rounds)

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