Estrada, 30, returned to the ring in November after more than a year off. The American boxed for the first time since moving from Golden Boy Promotions to Top Rank. The last time Ruprecht fought was in December.
The main event of this evening will be the return to the ring of former world super lightweight champion Jose Carlos Ramirez (27-1, 17 KOs), who will face former world lightweight champion Richard Commey (30-4-1, 27 KOs).