McCullers (forearm) recently underwent an MRI and isn't believed to be dealing with a long-term injury, Jon Heyman of MLB Network reports.
McCullers exited Game 4 of the ALDS against the White Sox on Tuesday due to right forearm discomfort. Although the results of his MRI were relatively encouraging, it's not yet clear whether the 28-year-old will be able to pitch in the ALCS.