The Pirates will call up six players tomorrow when rosters expand. On Sunday night, I reported that those six players would be Travis Snider, Jaff Decker, Pedro Florimon, Elias Diaz, Radhames Liz, and Bobby LaFromboise. Today, those six players were officially placed on the MLB taxi squad, meaning they have to be called up in the next day (but also allowing Indianapolis to add a few players so they wouldn't have to play six players short tonight).
In addition to those six, I wouldn't be surprised if Rob Scahill gets activated from his rehab assignment to give the team another pitcher.