STAGE

Playwright Jason Miller had some unusual trouble rehearsing the role of Coach Dunleavy in a Scranton, Pa., stage production of “That Championship Season.” Miller the actor didn’t always get along with Miller the author of the Pulitzer Prize-winning play. “I have to almost get schizophrenic, to think of how I want to play this character that that guy has written,” said Miller before Wednesday’s opening at the Pennsylvania Summer Theater Festival. “I almost have to play a trick on myself, and pretend I didn’t write it. I ask myself questions like ‘Why did he write that?’ I change a line or two. . . . As for the writer, we don’t let him on the set now. He’s been banished.”