Soriano tore the fingernail of his right middle finger while warming up in the seventh inning of Tuesday's 5-4, 12-inning win over the Orioles and will play catch on Wednesday to determine if he will be able to pitch.
"I sure hope so -- we could sure use him," Girardi said of Soriano. "We're going to have to find out as he goes through his catch tonight."
Because Girardi does not want to use pitchers three days in a row, he figures to be without both closer Mariano Rivera and setup man David Robertson on Wednesday, as they pitched in the first two games of the series against Baltimore.
Cory Wade (42 pitches on Tuesday) and David Phelps (31 pitches on Tuesday) are also unavailable, so if Soriano is unavailable, the calls would probably go to Boone Logan and Clay Rapada.
Girardi said that the Yankees thought about making a move to summon another arm from Triple-A Scranton/Wilkes-Barre but decided against it. He suggested that Phil Hughes could see mound time if the club desperately needs help.
"We have CC on the hill today, and we have an off-day [Thursday]," Girardi said. "I guess we thought we could get through."