Showalter said he had a good idea of at least two starters who will appear over the weekend, but he planned to wait before making a formal announcement. Chris Tillman will likely start one of the games, with Joe Saunders, Steve Johnson or Wei-Yin Chin filling the final spots.
"I'm not going to get locked into anything," Showalter said. "I need to see if we need something tonight. I know Tillman will pitch somewhere there against Boston. I got a pretty good idea of one of the others and am down to two or three options for the third one."