Perkins was slated to pitch Saturday against the Brewers, and manager Ron Gardenhire is not yet sure who will fill in to make that start.
"We have to go through the organizational process here, see who's pitching the best," Gardenhire said. "I know my thought. But I'm not going to tell you -- it will clash with the organization."
Gardenhire said he hoped to have an update on Perkins' MRI results Wednesday. Long reliever R.A. Dickey would be a logical option to make a spot start, but the Twins skipper said Tuesday that he didn't want to take the knuckleballer out of his role.
"I like him [in long relief]," Gardenhire said. "Dickey is very good where he's at. I thought [Monday] he really proved that."
Dickey threw 4 1/3 innings in relief of Perkins on Monday, who left the game after facing nine Yankees hitters and recording just two outs. Dickey scattered three hits and didn't surrender a run in the 7-6 loss.
The Twins have seemingly few other starting options out of their bullpen. Matt Guerrier is the only Minnesota middle reliever to have ever started a game, and that was in 2006. Newcomer Sean Henn is a starter-turned-reliever, but he would also be an unlikely choice to start Saturday.
The wait-and-see situation should become clearer Wednesday once the severity of Perkins' injury is known.
David Just is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.