Coach Joel Quenneville said Crawford didn't feel well on Monday night and felt worse Tuesday morning. Quenneville didn't expect Crawford to miss much time and said he is day to day. Crawford is 3-0-1 with a 1.66 goals-against average and .926 save percentage in four games this season.
Raanta was 13-5-4 with a 2.71 GAA and .897 save percentage as a rookie during the 2013-14 season. He signed with the Blackhawks in June 2013 after previously playing in Europe.
"Of course, you try to be ready every day because you never know what's going to be going on here," Raanta said after the team's morning skate. "It's lot of games, 82 games. You just try to put yourself focused all night long even though you're not playing and like that. Of course, it was a little different morning when you come up here and you hear you're going to play. I feel good, and I'm ready to go there."
To back up Raanta, the Blackhawks recalled goaltender Scott Darling from the Rockford IceHogs of the AHL.
Blackhawks forward Kris Versteeg will also make his season debut against the Flyers after missing the team's first four games with a lower-body injury. He skated with Andrew Shaw and Patrick Kane on the second line during the team's morning skate at the United Center.