Ramos vs Rigondeaux Undercard Results: Joel Diaz, Guy Robb Put on a ShoBox War

19-year-old prospect Joel Diaz Jr and 22-year-old Guy Robb were a late replacement fight for tonight's ShoBox, but they gave us one hell of a war, with Diaz scoring a somewhat early stoppage victory in the seventh round after a great fight.

Robb (7-1, 3 KO) put Diaz (7-0, 6 KO) down in the second round on a stunning whirlwind right hand out of nowhere, but took a knee himself in the third round after some big-time power punching from Diaz. Robb continued to pressure the young fighter, who stayed within himself and overall showed very good conditioning and stamina for a guy who had all of 10 professional rounds coming into this bout.

For the fight, Diaz landed 148 of 401 power punches (37%), and 172 of 523 total punches (33%). Robb landed 120 of 291 power punches (41%), and 130 of 386 (34%) overall. Robb outlanded Diaz to the body, 51-to-20, which was a big reason he stayed in the fight so well.

This was a great look at both young fighters, and kudos to Goossen Tutor for this tough, compelling matchmaking. Both fighters likely improved with this one, and this is the (very) early Fight of the Year leader for the time being. Diaz was leading on all three cards at the time of stoppage, according to new Showtime on-screen judge Chuck Giampa.

Our live coverage of ShoBox continues here, with the Ramos vs Rigondeaux main event up next.