Weights are in from Puerto Rico for Saturday night's "Undefeated Champions" pay-per-view event.

Note: In the co-feature, WBO junior lightweight titlist Roman Martinez was to face Vicente Martin Rodriguez. Rodriguez had a visa issue, however, and has been replaced by Colombian Feider Viloria (22-4-1, 15 KO), who has lost three of his last five and been stopped three times in his career. Not a great replacement, but it was really short notice, too.

Main Event - Junior Flyweight World Championship (12 Rounds)
Ivan Calderon 107.4
Rodel Mayol 107.3

Co-Feature - WBA Junior Lightweight Title (12 Rounds)
Roman Martinez 129.4
Feider Viloria 129.2

Junior Bantamweights (10 Rounds)
Juan Mercedes 115.2
Robert DaLuz 116.5

Cruiserweights (6 Rounds)
Carlos Negron 185
Larry Carter 184.8

The last two fights are showcases for Mercedes and Negron, but I do dig the nickname of Robert "Don't Lose" DaLuz.